67486 + Interview Questions in Secondary School in Physics

1.	2) write T for true or F for false.a. All things around us are man made.b. Artificial satellites rotate around the earth.c. Astronauts receive special training to go to space.d. We can not hear animal sound around us.e. We should not burst firecrackers.
Answer» $\huge{ \underline{\boxed{\red{ \color{red}{\textsf {\textbf{An}{\color{blue}{\textbf {\textsf{sw}}{\color{green}{\textbf{\textsf{er}}}{\color{orange}{\textsf{\textbf{~:-}}}}}}}}}}}}}$ False True True False True ✰✫✰✫✰✫✰✫✰✫✰✫ ♬♫♪ ➠Stay HAPPY N BLESSED

1.

2) write T for true or F for false.a. All things around us are man made.b. Artificial satellites rotate around the earth.c. Astronauts receive special training to go to space.d. We can not hear animal sound around us.e. We should not burst firecrackers.

Answer»

$\huge{ \underline{\boxed{\red{ \color{red}{\textsf {\textbf{An}{\color{blue}{\textbf {\textsf{sw}}{\color{green}{\textbf{\textsf{er}}}{\color{orange}{\textsf{\textbf{~:-}}}}}}}}}}}}}$

False
True
True
False
True

✰✫✰✫✰✫✰✫✰✫✰✫

♬♫♪

➠Stay HAPPY N BLESSED

Discussion

2.	A force of 12N acts on anobject of mass of 4kg in the state of rest for 3s. Calculate the kinetic energy acquired by the object . plz give answer fast
Answer» EXPLANATION: GIVEN DATA f = 12N m=4 Kg 1000 4. = 250 Final Velocity 3s Kinetic Energy By Formula 1/2 Mv SQUARE 2 F = Ma 12 = 250 x 3 12x 750 9000 N.M/S

2.

A force of 12N acts on anobject of mass of 4kg in the state of rest for 3s. Calculate the kinetic energy acquired by the object . plz give answer fast

Answer»

EXPLANATION:

GIVEN DATA

f = 12N

m=4 Kg 1000

4. = 250

Final Velocity 3s

Kinetic Energy By Formula

1/2 Mv SQUARE 2

F = Ma

12 = 250 x 3

12x 750

9000 N.M/S

Discussion

3.	(-2)2×(2)3isequalto(a)25(b)-25(c)45(d)-45ghfjdvdjjdhdjfndhxidjd hi
Answer» ANSWER this all OPTION is WRONG -24

3.

(-2)2×(2)3isequalto(a)25(b)-25(c)45(d)-45ghfjdvdjjdhdjfndhxidjd hi

Answer»

ANSWER

this all OPTION is WRONG

-24

Discussion

4.	An object is thrown vertically upwards from the ground with a velocity of 5msi) What is its velocity at its maximum height?ii) State the type of velocity possessed by the object.iii) What is the velocity with which it will hit the ground?
Answer» ooooooooooooooooooooooooooooooooooo ooooooooooooooooooooooooooooooooooo ooooooooooooooooooooooooooooooooooo ooooooooooooooooooooooooooooooooooo ooooooooooooooooooooooooooooooooooo ooooooooooooooooooooooooooooooooooo ooooooooooooooooooooooooooooooooooo ooooooooooooooooooooooooooooooooooo ooooooooooooooooooooooooooooooooooo oooooooooooooooooooooooooooooooooo okkkkkkkkkkkkkk okkkkkkkkkkkkkkkkkkkkk o

4.

An object is thrown vertically upwards from the ground with a velocity of 5msi) What is its velocity at its maximum height?ii) State the type of velocity possessed by the object.iii) What is the velocity with which it will hit the ground?

Answer»

ooooooooooooooooooooooooooooooooooo ooooooooooooooooooooooooooooooooooo ooooooooooooooooooooooooooooooooooo ooooooooooooooooooooooooooooooooooo ooooooooooooooooooooooooooooooooooo ooooooooooooooooooooooooooooooooooo ooooooooooooooooooooooooooooooooooo ooooooooooooooooooooooooooooooooooo ooooooooooooooooooooooooooooooooooo oooooooooooooooooooooooooooooooooo

okkkkkkkkkkkkkk

okkkkkkkkkkkkkkkkkkkkk

o

Discussion

5.	1) write the name and symbol of the element from the description.(a)The atom having the smallest size.
Answer» Answer: Among these, Helium (He)has the SMALLEST atomic radii because the stronger FORCE between the two protons and two ELECTRONS pulls the electron shell in closer than the lone electron and lone proton in a Hydrogen atom. It will shrink, MAKING helium the element with the smallest atomic SIZE

5.

1) write the name and symbol of the element from the description.(a)The atom having the smallest size.

Answer»

Answer:

Among these, Helium (He)has the SMALLEST atomic radii because the stronger FORCE between the two protons and two ELECTRONS pulls the electron shell in closer than the lone electron and lone proton in a Hydrogen atom. It will shrink, MAKING helium the element with the smallest atomic SIZE

Discussion

6.	Define potential Energy. Write expression for Potential Energy possessed by a body lifted tocertain height ‘h’. A person of 60kg climbs a stair case and reaches to a height of 4m. Calculate the potential energy acquired by the person. (take g = 10m/s2)
Answer» EXPLANATION: Potential energy, STORED energy that DEPENDS upon the relative position of various parts of a system. A spring has more potential energy when it is compressed or stretched. A steel ball has more potential energy raised above the ground than it has after FALLING to Earth. Hope, my ans will HELP you. ✌️✌️✌️

6.

Define potential Energy. Write expression for Potential Energy possessed by a body lifted tocertain height ‘h’. A person of 60kg climbs a stair case and reaches to a height of 4m. Calculate the potential energy acquired by the person. (take g = 10m/s2)

Answer»

EXPLANATION:

Potential energy, STORED energy that DEPENDS upon the relative position of various parts of a system. A spring has more potential energy when it is compressed or stretched. A steel ball has more potential energy raised above the ground than it has after FALLING to Earth.

Hope, my ans will HELP you.

✌️✌️✌️

Discussion

7.	Define potential Energy. Write expression for Potential Energy possessed by a body lifted tocertain height ‘h’. A person of 60kg climbs a stair case and reaches to a height of 4m. Calculate the potential energy hi acquired by the person. (take g = 10m/s2)
Answer» EXPLANATION: kJ · Here, m=60kg, HEIGHT h=10m. Work done W= change in potential energy =mgh−0=mgh=60×10×10=6000 J=6kJ ·

7.

Define potential Energy. Write expression for Potential Energy possessed by a body lifted tocertain height ‘h’. A person of 60kg climbs a stair case and reaches to a height of 4m. Calculate the potential energy hi acquired by the person. (take g = 10m/s2)

Answer»

EXPLANATION:

kJ · Here, m=60kg, HEIGHT h=10m. Work done W= change in potential energy =mgh−0=mgh=60×10×10=6000 J=6kJ ·

Discussion

8.	The ratio of distance to displacement made by an object moving in a curved path is(A) zero (B) 1 (C) less than 1 (D)greater than one
Answer» The ratio of distance to DISPLACEMENT made by an object MOVING in a CURVED path is (D)GREATER than one

8.

The ratio of distance to displacement made by an object moving in a curved path is(A) zero (B) 1 (C) less than 1 (D)greater than one

Answer»

The ratio of distance to DISPLACEMENT made by an object MOVING in a CURVED path is

(D)GREATER than one

Discussion

9.	The motion of a car is represented by the Graph given here . It is a Velocity - Time graph .Q1- Identify the type of motion from the following a) Car is not in Motionb) Car is moving with uniform velocity c) car is moving with uniform acceleration d) none of the above
Answer» ANSWER: bbbbbbbbbb Explanation: CAR is MOVING with UNIFORMS VELOCITY.

9.

The motion of a car is represented by the Graph given here . It is a Velocity - Time graph .Q1- Identify the type of motion from the following a) Car is not in Motionb) Car is moving with uniform velocity c) car is moving with uniform acceleration d) none of the above

Answer»

ANSWER:

bbbbbbbbbb

Explanation:

CAR is MOVING with UNIFORMS VELOCITY.

Discussion

10.	To Find the focal length of a concave mirror by using a distance objectAim:-Requirement:-Procedure:-DiagramObservationConclusion / Inferences:-
Answer» ANSWER: EXPLANATION:SS

10.

To Find the focal length of a concave mirror by using a distance objectAim:-Requirement:-Procedure:-DiagramObservationConclusion / Inferences:-

Answer»

ANSWER:

EXPLANATION:SS

Discussion

11.	18.Read the following and answer any four questions from 18 )to 18 (v).The motion of a car is represented by The Graph given here. Itis a Velocity-Time graphVelocity (m/w)2Time (3)18 (1)Identify the type of motion from the following.(A)car is not in motion(B) car is moving with uniform vclocity(C) car is moving with uniform acceleration(D)None of the above
Answer» ANSWER: cc Explanation: CCC ccccccccccccccccccccccccccccccccccccccccccc

11.

18.Read the following and answer any four questions from 18 )to 18 (v).The motion of a car is represented by The Graph given here. Itis a Velocity-Time graphVelocity (m/w)2Time (3)18 (1)Identify the type of motion from the following.(A)car is not in motion(B) car is moving with uniform vclocity(C) car is moving with uniform acceleration(D)None of the above

Answer»

ANSWER:

cc

Explanation:

CCC ccccccccccccccccccccccccccccccccccccccccccc

Discussion

12.	30. Explain the phenomenon of sex determination in human being.31. State two merits of parallel connection of resistors in the circuitfinaolectricotential and totaita hi
Answer» Answer: DEC of child is determined by gametes that fuse to form zygote and LATER offspring.sex of child is fully DEPEND on father

12.

30. Explain the phenomenon of sex determination in human being.31. State two merits of parallel connection of resistors in the circuitfinaolectricotential and totaita hi

Answer»

Answer:

DEC of child is determined by gametes that fuse to form zygote and LATER offspring.sex of child is fully DEPEND on father

Discussion

13.	Identify the type of motion from the following.(A) car is not in motion (B) car is moving with uniform velocity (C) car is moving with uniform acceleration (D)None of the above
Answer» ANSWER: (A) Car is not in MOTION EXPLANATION: HI EVERYONE I post a card madhe pravesh kela hota pan germanists originally

13.

Identify the type of motion from the following.(A) car is not in motion (B) car is moving with uniform velocity (C) car is moving with uniform acceleration (D)None of the above

Answer»

ANSWER:

(A) Car is not in MOTION

EXPLANATION:

HI EVERYONE I post a card madhe pravesh kela hota pan germanists originally

Discussion

14.	Define Kinetic Energy. Write expression for Kinetic Energy.A force of 12N acts on anobject of mass of 4kg in the state of rest for 3s. Calculate the kinetic energy acquired by the object.
Answer» KINETIC energy , form of energy that an object or a particle has by reason of its motion. mass = 4kg force = 12N TIME = 3s u = 0 if a is acceleration produced in the body a = F/m a = 4/3 m/ s let v be velocity of body after 3s v = u+at 0+4/3×3 v = 4m/s KE = 1/2 mv^2 1/2 × 4 × 4 ×4 KE = 16 j

14.

Define Kinetic Energy. Write expression for Kinetic Energy.A force of 12N acts on anobject of mass of 4kg in the state of rest for 3s. Calculate the kinetic energy acquired by the object.

Answer»

KINETIC energy , form of energy that an object or a particle has by reason of its motion.

mass = 4kg

force = 12N

TIME = 3s

u = 0

if a is acceleration produced in the body

a = F/m

a = 4/3 m/ s

let v be velocity of body after 3s

v = u+at

0+4/3×3

v = 4m/s

KE = 1/2 mv^2

1/2 × 4 × 4 ×4

KE = 16 j

Discussion

15.	Two resistances R1 and R2 of 2 ohm and 3 ohm respectively are connected in parallel with a1.5 volt battery and the battery current is found to be 0.75 A.(i) Find the internal resistance of the battery.(ii) Find the power developed across R1.
Answer» Answer: 26. (i) 0.8 ohm (II)current through R1 = (3/5) of 0.75 A or, 0.45 A, POWER = I^2R1 = (0.45)^2 x 2 WATT = 0.4watt Explanation: Mark me Brainliest

15.

Two resistances R1 and R2 of 2 ohm and 3 ohm respectively are connected in parallel with a1.5 volt battery and the battery current is found to be 0.75 A.(i) Find the internal resistance of the battery.(ii) Find the power developed across R1.

Answer»

Answer:

26.

(i) 0.8 ohm

(II)current through R1 = (3/5) of 0.75 A

or, 0.45 A, POWER = I^2R1 = (0.45)^2

x 2 WATT = 0.4watt

Explanation:

Mark me Brainliest

Discussion

16.	Kinetic energy of a particle depends on the squareof speed of the particle. If error in measurement ofspeed is 40% then error in the measurement ofkinetic energy will be(1) 80%(2) 40%(3) 96%(4) 120%
Answer» Answer: 96% kinetic energy of a particle depends on square of speed of a particle. e.g., K =1/2 mv² .(1)LET initial velocity of a particle is v and initial kinetic energy is K. if ERROR of speed is 40% then new speed of particle ,v' = v + 40% of v = y + 40v/100 = 1.4v then kinetic energy will be K' = 1/2 mv'2 = 1/2 m(1.4v)2 = 1/2 m(1.96v) = (1.96) 1/2mv? = (1.96) K [ FORM equation (1), ] now, % error in Kinetic energy = final kinetic energy- initial kinetic energy/initial kinetic energy x 100 = (K' K)/K x 100 = = = (1.96K - K)/K 100 = 0.96K/K x 100 = 96% *hence, maximum error in kinetic energy about be 96 %*

16.

Kinetic energy of a particle depends on the squareof speed of the particle. If error in measurement ofspeed is 40% then error in the measurement ofkinetic energy will be(1) 80%(2) 40%(3) 96%(4) 120%

Answer»

Answer: 96%

kinetic energy of a particle depends on square of speed of a particle.

e.g., K =1/2 mv²

.(1)LET initial velocity of a particle is v and initial kinetic energy is K.

if ERROR of speed is 40%

then new speed of particle ,v' = v + 40% of v

= y + 40v/100 = 1.4v

then kinetic energy will be K' = 1/2 mv'2

= 1/2 m(1.4v)2

= 1/2 m(1.96v)

= (1.96) 1/2mv?

= (1.96) K [ FORM equation (1), ]

now, % error in Kinetic energy = final kinetic energy- initial kinetic energy/initial kinetic energy x 100

= (K' K)/K x 100 =

= = (1.96K - K)/K 100

= 0.96K/K x 100

= 96%

hence, maximum error in kinetic energy about be 96 %

Discussion

17.	Intial temperature of a gas is 300 K & its y = 1,5 ifadibatically its temperature reduced to 100 K, whatwill be effect on its volume & pressure,
Answer» <P>Answer: One mole of a monatomic ideal gas, in the initial state T = 273 K, P = 1 ATM, is subjected ... Then a doubling of its pressure at CONSTANT VOLUME, ... Calculate the final temperature of the gas.

17.

Intial temperature of a gas is 300 K & its y = 1,5 ifadibatically its temperature reduced to 100 K, whatwill be effect on its volume & pressure,

Answer»

<P>Answer:

One mole of a monatomic ideal gas, in the initial state T = 273 K, P = 1 ATM, is subjected ... Then a doubling of its pressure at CONSTANT VOLUME, ... Calculate the final temperature of the gas.

Discussion

18.	A ball of mass 10g is moving with a velocity of 50ms-1. On applying a constantforce on the ball for 2s, it acquires a velocity of 70ms-1. Calculatei) the initial momentum of the ball ii) the final momentum of the balliii) the acceleration of the ball iv) the magnitude of the force applied.
Answer» Explanation: Answer onQuestion #45541, Physics, OtherQuestion:A ball of mass 10Kg is initially moving with a velocity of 50 m/s. On applying a constant force on ball for 2s,it ACQUIRES a velocity of 70m/s. Calculate:a) The initial momentum of the ballb) The final momentum of the ballc) The RATE of change of momentumd) The acceleration of the balle) The magnitude of the force appliedAnswer:a)The initial momentum of the ballequals:푝푖=푚푣푖=10푘푔⋅50푚푠=500푘푔푚푠where 푚is mass of the ball, 푣푖is initial velocity.b)The FINALMOMENTUM of the ballequals:푝푓=푚푣푓=10푘푔⋅70푚푠=700푘푔푚푠where 푚is mass of the ball, 푣푓is final velocity.c)The rate of change of momentumequals:Δ푝=푝푓−푝푖=(700−500)푘푔푚푠=200푘푔푚푠d)The acceleration ofthe ballequals:푎=Δ푣Δ푡=푣푓−푣푖훥푡=70−502푚푠2=10푚푠2e)The magnitude of the forceequals (Newton’s second law of MOTION):퐹=푚푎=10푘푔10푚푠2=10

18.

A ball of mass 10g is moving with a velocity of 50ms-1. On applying a constantforce on the ball for 2s, it acquires a velocity of 70ms-1. Calculatei) the initial momentum of the ball ii) the final momentum of the balliii) the acceleration of the ball iv) the magnitude of the force applied.

Answer»

Explanation:

Answer onQuestion #45541, Physics, OtherQuestion:A ball of mass 10Kg is initially moving with a velocity of 50 m/s. On applying a constant force on ball for 2s,it ACQUIRES a velocity of 70m/s. Calculate:a) The initial momentum of the ballb) The final momentum of the ballc) The RATE of change of momentumd) The acceleration of the balle) The magnitude of the force appliedAnswer:a)The initial momentum of the ballequals:푝푖=푚푣푖=10푘푔⋅50푚푠=500푘푔푚푠where 푚is mass of the ball, 푣푖is initial velocity.b)The FINALMOMENTUM of the ballequals:푝푓=푚푣푓=10푘푔⋅70푚푠=700푘푔푚푠where 푚is mass of the ball, 푣푓is final velocity.c)The rate of change of momentumequals:Δ푝=푝푓−푝푖=(700−500)푘푔푚푠=200푘푔푚푠d)The acceleration ofthe ballequals:푎=Δ푣Δ푡=푣푓−푣푖훥푡=70−502푚푠2=10푚푠2e)The magnitude of the forceequals (Newton’s second law of MOTION):퐹=푚푎=10푘푔10푚푠2=10

Discussion

19.	An object having mass 2kg is moving with constant velocity of 5ms-1. How much Force isacting on the body (A) infinite force (B) zero (C) 10 newton (D) 2.5 newton
Answer» EXPLANATION: The FORMULA USED F=m×a Force=mass×acceleration Hope it HELPS you

19.

An object having mass 2kg is moving with constant velocity of 5ms-1. How much Force isacting on the body (A) infinite force (B) zero (C) 10 newton (D) 2.5 newton

Answer»

EXPLANATION:

The FORMULA USED

F=m×a

Force=mass×acceleration

Hope it HELPS you

Discussion

20.	7 1) Two isotopes of Uranium have 92 electrons each and have 144, 148 neutrons respectivelyMass numbers of these two isotopes will be respectively(A)237 236(B)236 237(C) 236 238(D)238 236
Answer» ANSWER: (C) 236 238 is an CORRECT answer..

20.

7 1) Two isotopes of Uranium have 92 electrons each and have 144, 148 neutrons respectivelyMass numbers of these two isotopes will be respectively(A)237 236(B)236 237(C) 236 238(D)238 236

Answer»

ANSWER:

(C) 236 238 is an CORRECT answer..

Discussion

21.	Class 7 Physics Final Exam (General Science)00:26:39Look at the figure shown and answer the following.b) identify colourl and colour 7. (1 mark)(i) What is this phenomenon called? (1 mark)(mm) Give an example from real life where this can be seen. (1 mark)Colour 1WhitelightPrismColour 7
Answer» EXPLANATION: max_bmnx_ujk COME here let's have some FUN girls of 7TH CLASS

21.

Class 7 Physics Final Exam (General Science)00:26:39Look at the figure shown and answer the following.b) identify colourl and colour 7. (1 mark)(i) What is this phenomenon called? (1 mark)(mm) Give an example from real life where this can be seen. (1 mark)Colour 1WhitelightPrismColour 7

Answer»

EXPLANATION:

max_bmnx_ujk COME here let's have some FUN girls of 7TH CLASS

Discussion

22.	An object having mass 2kg is moving with constant velocity of 5ms-1. How much Force isacting on the body (A) infinite force (B) zero (C) 10 newton (D) 2.5 newton io
Answer» ANSWER: An object having mass 2KG is moving with constant VELOCITY of 5ms-1. How MUCH Force is ans:C) 10 newton

22.

An object having mass 2kg is moving with constant velocity of 5ms-1. How much Force isacting on the body (A) infinite force (B) zero (C) 10 newton (D) 2.5 newton io

Answer»

ANSWER:

An object having mass 2KG is moving with constant VELOCITY of 5ms-1. How MUCH Force is

ans:C) 10 newton

Discussion

23.	WhichmethodisusetoseparatetealeavesfromhotboilingLiquidteamixture?
Answer» Answer: Filtration is one of the method which is used for SEPARATING the LIQUID COMPONENTS from the solid components. Sieving is the used for separating large particles from solid components. For separating tea LEAVES from the tea as tea leaves are a solid COMPONENT and tea is a liquid component, the filtration is used.

23.

WhichmethodisusetoseparatetealeavesfromhotboilingLiquidteamixture?

Answer»

Answer:

Filtration is one of the method which is used for SEPARATING the LIQUID COMPONENTS from the solid components. Sieving is the used for separating large particles from solid components. For separating tea LEAVES from the tea as tea leaves are a solid COMPONENT and tea is a liquid component, the filtration is used.

Discussion

24.	What kind of graph do we obtain if we plot position – time graph of the car(A)Straight line parallel to X axis (B) Straight line parallel to Y axis (C) parabola (D)Zig Zag curve
Answer» ANSWER: parabola Explanation: because SPEED of CAR will not CONSTANT

24.

What kind of graph do we obtain if we plot position – time graph of the car(A)Straight line parallel to X axis (B) Straight line parallel to Y axis (C) parabola (D)Zig Zag curve

Answer»

ANSWER:

parabola

Explanation:

because

SPEED of CAR will not CONSTANT

Discussion

25.	Define Kinetic Energy. Write expression for Kinetic Energy.A force of 12N acts on anobject of mass of 4kg in the state of rest for 3s. Calculate the kinetic energy acquired by the object. for 5 marks
Answer» Answer: The energy possessed by an object due to its MOTION is CALLED kinetic energ of that object. Where m is mass of the object and V is VELOCITY of the object.

25.

Define Kinetic Energy. Write expression for Kinetic Energy.A force of 12N acts on anobject of mass of 4kg in the state of rest for 3s. Calculate the kinetic energy acquired by the object. for 5 marks

Answer»

Answer:

The energy possessed by an object due to its MOTION is CALLED kinetic energ of that object.

Where m is mass of the object and V is VELOCITY of the object.

Discussion

26.	An element has atomic number 20. Where would you expect this element in theperiodic table and why?
Answer» ANSWER: Calcium is the element with 'atomic NUMBER' 20. Explanation: Calcium BELONGS to group 2, period 4, and block 's' in the periodic table. This is because calcium is an 'alkaline earth metal' and alkaline earth METALS are placed in group 2 in the periodic table.

26.

An element has atomic number 20. Where would you expect this element in theperiodic table and why?

Answer»

ANSWER:

Calcium is the element with 'atomic NUMBER' 20. Explanation: Calcium BELONGS to group 2, period 4, and block 's' in the periodic table. This is because calcium is an 'alkaline earth metal' and alkaline earth METALS are placed in group 2 in the periodic table.

Discussion

27.	A car sterds from otest and attist, aHelocity of 20 m/s un 5 sec Calculete thedistance duringthistime
Answer» Answer: u = 0 m/s v = 20 m/s t = 5s a = v-u/t = 20m/s - 0m/s / 5s = 4 m/s² 2as = v² - u² 2[4m/s²] = 400 m²/s² - 0 m²/s² [8 m/s²]s = 400 m²/s² s = 400 m²/s² / 8 m/s² s = 50 m ∴ the DISTANCE TRAVELED during this TIME is 50 m

27.

A car sterds from otest and attist, aHelocity of 20 m/s un 5 sec Calculete thedistance duringthistime

Answer»

Answer:

u = 0 m/s

v = 20 m/s

t = 5s

a = v-u/t

= 20m/s - 0m/s / 5s

= 4 m/s²

2as = v² - u²

2[4m/s²] = 400 m²/s² - 0 m²/s²

[8 m/s²]s = 400 m²/s²

s = 400 m²/s² / 8 m/s²

s = 50 m

∴ the DISTANCE TRAVELED during this TIME is 50 m

Discussion

28.	) What kind of graph do we obtain if we plot position – time graph of the car(A)Straight line parallel to X axis(B) Straight line parallel to Y axis(C) parabola(D)Zig Zag curve
Answer» ANSWER: straight line PARALLEL to x AXIS

28.

) What kind of graph do we obtain if we plot position – time graph of the car(A)Straight line parallel to X axis(B) Straight line parallel to Y axis(C) parabola(D)Zig Zag curve

Answer»

ANSWER:

straight line PARALLEL to x AXIS

Discussion

29.	the ball is dropped from top of the tower, after 2 seconds another ball is thrown vertically downward with a speed 40m/sec after how much time and at what distance the ball meets
Answer» ANSWER: there will be 2 SECOND difference but the 2nd BALL is THROWN VERTICALLY so they will meet about 4-6 second later till the time the 2nd ball is thrown

29.

the ball is dropped from top of the tower, after 2 seconds another ball is thrown vertically downward with a speed 40m/sec after how much time and at what distance the ball meets

Answer»

ANSWER:

there will be 2 SECOND difference

but the 2nd BALL is THROWN VERTICALLY so they will meet about 4-6 second later till the time the 2nd ball is thrown

Discussion

30.	11-3-PHYSICS1. When source of sound moves towards a stationary observer, the wavelength of soundreceived by himA) decreases while frequency increasesB) remains the same whereas frequency increasesC) increases and frequency also increasesD) decreases while frequency remains the same
Answer» EXPLANATION: As source of sound moves towards the observer , the frequency increases. But the velocity of sound remains same that HENCE, wavelength decreases so answer is OPTIONAL -(A)

30.

11-3-PHYSICS1. When source of sound moves towards a stationary observer, the wavelength of soundreceived by himA) decreases while frequency increasesB) remains the same whereas frequency increasesC) increases and frequency also increasesD) decreases while frequency remains the same

Answer»

EXPLANATION:

As source of sound moves towards the observer , the frequency increases. But the velocity of sound remains same that

HENCE, wavelength decreases

so answer is OPTIONAL -(A)

Discussion

31.	What will happen to the value of resistility ifthe length of the wire is halved
Answer» ANSWER: It will also be HALVED EXPLANATION: As LENGTH is directly proportional to resistivity if so if length is doubled it will be doubled and if it is halved then resistivity will be halved Please MARK me as brainliest please

31.

What will happen to the value of resistility ifthe length of the wire is halved

Answer»

ANSWER:

It will also be HALVED

EXPLANATION:

As LENGTH is directly proportional to resistivity if so if length is doubled it will be doubled and if it is halved then resistivity will be halved

Please MARK me as brainliest please

Discussion

32.	If eight resistor are connected in series to give equivalent resistance as 48ohms, then what is value each resistor
Answer» GIVEN : ▪ Eight identical resistors are connected in series. ▪ Eq. resistance = 48Ω To Find : ▪ Value of each resistor. Solution : ↗ Eq. resistance of series connection is given by ✴ Req = R1 + R2 + ... + Rn ☞ Let resistance of each resistor be R. ATQ, All are connected in series and equivalent resistance of connection is 48Ω. ↗ Req = 48Ω ↗ R1 = R2 = ... = R8 = R → Req = R1 + R2 + ... + R8 → 48 = R + R + ... + R (8 TIMES) → 48 = 8R → R = 48/8 → R = 6Ω ፨ Value of each resistor = 6Ω

32.

If eight resistor are connected in series to give equivalent resistance as 48ohms, then what is value each resistor

Answer»

GIVEN :

▪ Eight identical resistors are connected in series.

▪ Eq. resistance = 48Ω

To Find :

▪ Value of each resistor.

Solution :

↗ Eq. resistance of series connection is given by

✴ Req = R1 + R2 + ... + Rn

☞ Let resistance of each resistor be R.

ATQ, All are connected in series and equivalent resistance of connection is 48Ω.

↗ Req = 48Ω

↗ R1 = R2 = ... = R8 = R

→ Req = R1 + R2 + ... + R8

→ 48 = R + R + ... + R (8 TIMES)

→ 48 = 8R

→ R = 48/8

→ R = 6Ω

፨ Value of each resistor = 6Ω

Discussion

33.	what mass of potassim nitate be need to produce of potassium nitate in 50 grames of water at 313k(mass of potassium nitrale requride to prouduce a sturated in 100g of water at 313k 62g
Answer» ANSWER: not KNOW SOSO SORRY YAAR

33.

what mass of potassim nitate be need to produce of potassium nitate in 50 grames of water at 313k(mass of potassium nitrale requride to prouduce a sturated in 100g of water at 313k 62g

Answer»

ANSWER:

not KNOW SOSO SORRY YAAR

Discussion

34.	21. A sphere of mass 'm' moving with velocity 'v' collides head-on on another sphere of samemass which is at rest. The ratio of final velocity of second sphere to the initial velocity ofthe first sphere is (e is coefficient of restitution and collision is inelastic)e-1A)B)C)D) e222nyer one oscillation ise +1et
Answer» ANSWER: the first WEIGHT is it is COMPLAINING of character and calling is in STUDENTS e - 1D E221 oxygen is a + 1

34.

21. A sphere of mass 'm' moving with velocity 'v' collides head-on on another sphere of samemass which is at rest. The ratio of final velocity of second sphere to the initial velocity ofthe first sphere is (e is coefficient of restitution and collision is inelastic)e-1A)B)C)D) e222nyer one oscillation ise +1et

Answer»

ANSWER:

the first WEIGHT is it is COMPLAINING of character and calling is in STUDENTS e - 1D E221 oxygen is a + 1

Discussion

35.	What is the Relation between de Broglic equation and Bohr's Hypothesis of atom
Answer» *ANSWER*: Bohr postulated that angular momentum of an electron revolving around the nucleus as quantized. Hence, the angular momentum will only be an integral multiple of a constant value and SUGGESTED the following EXPRESSION.

35.

What is the Relation between de Broglic equation and Bohr's Hypothesis of atom

Answer»

ANSWER:

Bohr postulated that angular momentum of an electron revolving around the nucleus as quantized. Hence, the angular momentum will only be an integral multiple of a constant value and SUGGESTED the following EXPRESSION.

Discussion

36.	When a beam of white light passes through a prism, state the component of white light which deviates the i) least and ii) most
Answer» ANSWER: SORRY I can't UNDERSTAND the QUESTION

36.

When a beam of white light passes through a prism, state the component of white light which deviates the i) least and ii) most

Answer»

ANSWER:

SORRY I can't UNDERSTAND the QUESTION

Discussion

37.	solve this and get brainliest and +1 thanks please it is important if you don't know than don't write anything
Answer» ANSWER: a-22. b-42 OK now it's RIGHT OKAY

37.

solve this and get brainliest and +1 thanks please it is important if you don't know than don't write anything

Answer»

ANSWER:

a-22. b-42 OK now it's RIGHT OKAY

Discussion

38.	a car travelling at a speed of 20 meter per second apply break in stops within 10 minute what is the acceleration of car
Answer» -2 Explanation v=0 u=20m/s t=10mins. v=u+at 0=20+a×10 0=20+10a -20=10a -20/10=a -2 m/s SQ.

38.

a car travelling at a speed of 20 meter per second apply break in stops within 10 minute what is the acceleration of car

Answer»

-2

Explanation

v=0

u=20m/s

t=10mins.

v=u+at

0=20+a×10

0=20+10a

-20=10a

-20/10=a

-2 m/s SQ.

Discussion

39.	What are the differences between gas and vapour???
Answer» ANSWER: ✒A gas is a substance above its CRITICAL temperature but below its critical pressure, while a vapour is a substance above its boiling point. whereas , ✒Gas is one of the 4 states of matter whereas vapour does not CLASSIFY as such. It is just a substance in GASEOUS form. -Gas cannot be seen while VAPOURS are visible. HOPE IT HELPS YOU

39.

What are the differences between gas and vapour???

Answer»

ANSWER:

✒A gas is a substance above its CRITICAL temperature but below its critical pressure, while a vapour is a substance above its boiling point.

whereas ,

✒Gas is one of the 4 states of matter whereas vapour does not CLASSIFY as such. It is just a substance in GASEOUS form. -Gas cannot be seen while VAPOURS are visible.

HOPE IT HELPS YOU

Discussion

40.	Radioactivity is related to atomic physics or nuclear physics ???
Answer» Answer: Nuclear Physics/RADIOACTIVITY. Radioactivity is the CONVERSION of one nuclear state to another. It is accompanied by the emission of particles or electromagnetic radiation. The nuclear state change can OFTEN involve a change in the ATOMIC NUMBER of the atoms involved.

40.

Radioactivity is related to atomic physics or nuclear physics ???

Answer»

Answer:

Nuclear Physics/RADIOACTIVITY. Radioactivity is the CONVERSION of one nuclear state to another. It is accompanied by the emission of particles or electromagnetic radiation. The nuclear state change can OFTEN involve a change in the ATOMIC NUMBER of the atoms involved.

Discussion

41.	Name the frequently used metals for the making of photoelectric cells?no Google answer plz.
Answer» EXPLANATION: Assertion: POTASSIUM and CAESIUM are used in photoelectric CELLS. REASON: Potassium and caesium emit electrons on exposure to light.

41.

Name the frequently used metals for the making of photoelectric cells?no Google answer plz.

Answer»

EXPLANATION:

Assertion: POTASSIUM and CAESIUM are used in photoelectric CELLS. REASON: Potassium and caesium emit electrons on exposure to light.

Discussion

42.	What is the effect of intensity on the stopping potential
Answer» ANSWER: Intensity in photoelectric effect DEALS with the number of photons attacking electrons to produce current. It does not effect the kinetic ENERGY of electrons. Hence stopping potential of anode REMAINS unchanged.

42.

What is the effect of intensity on the stopping potential

Answer»

ANSWER:

Intensity in photoelectric effect DEALS with the number of photons attacking electrons to produce current. It does not effect the kinetic ENERGY of electrons. Hence stopping potential of anode REMAINS unchanged.

Discussion

43.	What are the differences between Solar Cells and Photoelectric Cells?
Answer» Answer: please mark as brainliest Explanation: A solar cell produces POWER for an electrical CIRCUIT while a photocell is a light-activated CONTROL switch. Photocells have been used since the mid 1900s in light METERS while solar cells have only become popular since 1990. The only commonality between the two is that light is needed for them to WORK.

43.

What are the differences between Solar Cells and Photoelectric Cells?

Answer»

Answer:

please mark as brainliest

Explanation:

A solar cell produces POWER for an electrical CIRCUIT while a photocell is a light-activated CONTROL switch. Photocells have been used since the mid 1900s in light METERS while solar cells have only become popular since 1990. The only commonality between the two is that light is needed for them to WORK.

Discussion

44.	Intensity of electric field equation at a point midway between the charges
Answer» LET A be the POINT midway between the two charges. Electric field intensity at A due to the two charges: $e = \frac{kq1}{ {x}^{2} } + \frac{kq2}{ {x}^{2} }$ If the two charges are equal in magnitude and opposite in sign, then E reduces to ZERO.

44.

Intensity of electric field equation at a point midway between the charges

Answer»

LET A be the POINT midway between the two charges.

Electric field intensity at A due to the two charges:

$e = \frac{kq1}{ {x}^{2} } + \frac{kq2}{ {x}^{2} }$

If the two charges are equal in magnitude and opposite in sign, then E reduces to ZERO.

Discussion

45.	A body moves 200 meters in first 10 seconds and 400 meters in next 10 seconds.what is the uniform acceleration of body?
Answer» Answer: 10 METERS PER SECOND SQUARE.

45.

A body moves 200 meters in first 10 seconds and 400 meters in next 10 seconds.what is the uniform acceleration of body?

Answer»

Answer:

10 METERS PER SECOND SQUARE.

Discussion

46.	three charges 10microcoulomb,5 microcoulomb,-5microcoulomb are placed in air at the corner at the three corners A,B and C of an equilateral triangle of side 0.1m.find the resultant force experienced by charge placed at corner A
Answer» Answer: Component of Forces DUE to B and A in x DIRECTION acting on C cancel out each other FX = 0 in y direction forces add upWe get Fy = k(1μC)(2μC)(10 × 10-2)2

46.

three charges 10microcoulomb,5 microcoulomb,-5microcoulomb are placed in air at the corner at the three corners A,B and C of an equilateral triangle of side 0.1m.find the resultant force experienced by charge placed at corner A

Answer»

Answer:

Component of Forces DUE to B and A in x DIRECTION acting on C cancel out each other FX = 0 in y direction forces add upWe get Fy = k(1μC)(2μC)(10 × 10-2)2

Discussion

47.	a coin is placedat the bottom of a beaker containing water(refractive index=4/3) to a depth 12 cm. By what height the coin appears to be raised when seen from vertically above?
Answer» Answer: the height the COIN appears to be raised when seen from vertically above=3cm Explanation: given that, reflective index =4/3 real depth=12cm APPARENT depth=? reflective index =RD/AD 4/3=12/AD AD4=123 AD=123/4 AD=33 AD=9cm now, we have to find the height of the coin appears to be rise when seen from vertically above. =real depth - apparent depth =12 - 9 =3cm I *hope* it *will* *benefit* *you* *buddy. please* *make* my *answer* *BRAINLIEST.*.

47.

a coin is placedat the bottom of a beaker containing water(refractive index=4/3) to a depth 12 cm. By what height the coin appears to be raised when seen from vertically above?

Answer»

Answer:

the height the COIN appears to be raised when seen from vertically above=3cm

Explanation:

given that,

reflective index =4/3

real depth=12cm

APPARENT depth=?

reflective index =RD/AD

4/3=12/AD

AD*4=12*3

AD=12*3/4

AD=3*3

AD=9cm

now,

we have to find the height of the coin appears to be rise when seen from vertically above.

=real depth - apparent depth

=12 - 9 =3cm

I hope it will benefit you buddy.

please make my answer BRAINLIEST..

Discussion

48.	4. Name a device that measures the amount of electric current in acircuit.
Answer» Answer: ammeter An ammeter measures the ELECTRIC current in a circuit. The name is derived from the name for the SI UNIT for electric current, amperes (A). In order for an ammeter to measure a device's current, it MUST be CONNECTED in SERIES to that device.

48.

4. Name a device that measures the amount of electric current in acircuit.

Answer»

Answer:

ammeter

An ammeter measures the ELECTRIC current in a circuit. The name is derived from the name for the SI UNIT for electric current, amperes (A). In order for an ammeter to measure a device's current, it MUST be CONNECTED in SERIES to that device.

Discussion

49.	Please answer this question ??
Answer» EXPLANATION: convexo concave ☺☺☺ HOPE IT'S HELP YOU ☺ ☺ PLEASE MARK ME AS A BRAINLIST

49.

Please answer this question ??

Answer»

EXPLANATION:

convexo concave

☺☺☺

HOPE IT'S HELP YOU ☺ ☺ PLEASE MARK ME AS A BRAINLIST

Discussion

50.	Express 200k on Fahrenheit scale
Answer» Answer: 200 KELVINS = -99.67 DEGREES FAHRENHEIT

50.

Express 200k on Fahrenheit scale

Answer»

Answer:

200 KELVINS =

-99.67 DEGREES FAHRENHEIT

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

2) write T for true or F for false.a. All things around us are man made.b. Artificial satellites rotate around the earth.c. Astronauts receive special training to go to space.d. We can not hear animal sound around us.e. We should not burst firecrackers.​

A force of 12N acts on anobject of mass of 4kg in the state of rest for 3s. Calculate the kinetic energy acquired by the object . plz give answer fast​

(-2)2×(2)3isequalto(a)25(b)-25(c)45(d)-45ghfjdvdjjdhdjfndhxidjd hi​

An object is thrown vertically upwards from the ground with a velocity of 5msi) What is its velocity at its maximum height?ii) State the type of velocity possessed by the object.iii) What is the velocity with which it will hit the ground?​

1) write the name and symbol of the element from the description.(a)The atom having the smallest size.​

Define potential Energy. Write expression for Potential Energy possessed by a body lifted tocertain height ‘h’. A person of 60kg climbs a stair case and reaches to a height of 4m. Calculate the potential energy acquired by the person. (take g = 10m/s2)​

Define potential Energy. Write expression for Potential Energy possessed by a body lifted tocertain height ‘h’. A person of 60kg climbs a stair case and reaches to a height of 4m. Calculate the potential energy hi acquired by the person. (take g = 10m/s2)​

The ratio of distance to displacement made by an object moving in a curved path is(A) zero (B) 1 (C) less than 1 (D)greater than one​

The motion of a car is represented by the Graph given here . It is a Velocity - Time graph .Q1- Identify the type of motion from the following a) Car is not in Motionb) Car is moving with uniform velocity c) car is moving with uniform acceleration d) none of the above ​

To Find the focal length of a concave mirror by using a distance objectAim:-Requirement:-Procedure:-DiagramObservationConclusion / Inferences:-​

30. Explain the phenomenon of sex determination in human being.31. State two merits of parallel connection of resistors in the circuitfinaolectricotential and totaita hi​

Identify the type of motion from the following.(A) car is not in motion (B) car is moving with uniform velocity (C) car is moving with uniform acceleration (D)None of the above​

Define Kinetic Energy. Write expression for Kinetic Energy.A force of 12N acts on anobject of mass of 4kg in the state of rest for 3s. Calculate the kinetic energy acquired by the object.​

Two resistances R1 and R2 of 2 ohm and 3 ohm respectively are connected in parallel with a1.5 volt battery and the battery current is found to be 0.75 A.(i) Find the internal resistance of the battery.(ii) Find the power developed across R1.​

Kinetic energy of a particle depends on the squareof speed of the particle. If error in measurement ofspeed is 40% then error in the measurement ofkinetic energy will be(1) 80%(2) 40%(3) 96%(4) 120%​

Intial temperature of a gas is 300 K & its y = 1,5 ifadibatically its temperature reduced to 100 K, whatwill be effect on its volume & pressure,​

A ball of mass 10g is moving with a velocity of 50ms-1. On applying a constantforce on the ball for 2s, it acquires a velocity of 70ms-1. Calculatei) the initial momentum of the ball ii) the final momentum of the balliii) the acceleration of the ball iv) the magnitude of the force applied.

An object having mass 2kg is moving with constant velocity of 5ms-1. How much Force isacting on the body (A) infinite force (B) zero (C) 10 newton (D) 2.5 newton​

EXPLANATION:

The FORMULA USED

F=m×a

Force=mass×acceleration

Hope it HELPS you

7 1) Two isotopes of Uranium have 92 electrons each and have 144, 148 neutrons respectivelyMass numbers of these two isotopes will be respectively(A)237 236(B)236 237(C) 236 238(D)238 236​

Class 7 Physics Final Exam (General Science)00:26:39Look at the figure shown and answer the following.b) identify colourl and colour 7. (1 mark)(i) What is this phenomenon called? (1 mark)(mm) Give an example from real life where this can be seen. (1 mark)Colour 1WhitelightPrismColour 7​

An object having mass 2kg is moving with constant velocity of 5ms-1. How much Force isacting on the body (A) infinite force (B) zero (C) 10 newton (D) 2.5 newton io​

WhichmethodisusetoseparatetealeavesfromhotboilingLiquidteamixture?​

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Define Kinetic Energy. Write expression for Kinetic Energy.A force of 12N acts on anobject of mass of 4kg in the state of rest for 3s. Calculate the kinetic energy acquired by the object. for 5 marks​

An element has atomic number 20. Where would you expect this element in theperiodic table and why?​

A car sterds from otest and attist, aHelocity of 20 m/s un 5 sec Calculete thedistance duringthistime​

) What kind of graph do we obtain if we plot position – time graph of the car(A)Straight line parallel to X axis(B) Straight line parallel to Y axis(C) parabola(D)Zig Zag curve

the ball is dropped from top of the tower, after 2 seconds another ball is thrown vertically downward with a speed 40m/sec after how much time and at what distance the ball meets

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What will happen to the value of resistility ifthe length of the wire is halved​

If eight resistor are connected in series to give equivalent resistance as 48ohms, then what is value each resistor

GIVEN :

To Find :

Solution :

what mass of potassim nitate be need to produce of potassium nitate in 50 grames of water at 313k(mass of potassium nitrale requride to prouduce a sturated in 100g of water at 313k 62g

What is the Relation between de Broglic equation and Bohr's Hypothesis of atom ​

ANSWER:

When a beam of white light passes through a prism, state the component of white light which deviates the i) least and ii) most

solve this and get brainliest and +1 thanks please it is important if you don't know than don't write anything

a car travelling at a speed of 20 meter per second apply break in stops within 10 minute what is the acceleration of car ​

What are the differences between gas and vapour???​

✒A gas is a substance above its CRITICAL temperature but below its critical pressure, while a vapour is a substance above its boiling point.

whereas ,

✒Gas is one of the 4 states of matter whereas vapour does not CLASSIFY as such. It is just a substance in GASEOUS form. -Gas cannot be seen while VAPOURS are visible.

HOPE IT HELPS YOU

Radioactivity is related to atomic physics or nuclear physics ???​

Name the frequently used metals for the making of photoelectric cells?no Google answer plz.​

What is the effect of intensity on the stopping potential​

What are the differences between Solar Cells and Photoelectric Cells?​

Intensity of electric field equation at a point midway between the charges​

A body moves 200 meters in first 10 seconds and 400 meters in next 10 seconds.what is the uniform acceleration of body?

three charges 10microcoulomb,5 microcoulomb,-5microcoulomb are placed in air at the corner at the three corners A,B and C of an equilateral triangle of side 0.1m.find the resultant force experienced by charge placed at corner A​

a coin is placedat the bottom of a beaker containing water(refractive index=4/3) to a depth 12 cm. By what height the coin appears to be raised when seen from vertically above?​

4. Name a device that measures the amount of electric current in acircuit.​

Please answer this question ??​

convexo concave

Express 200k on Fahrenheit scale

2) write T for true or F for false.a. All things around us are man made.b. Artificial satellites rotate around the earth.c. Astronauts receive special training to go to space.d. We can not hear animal sound around us.e. We should not burst firecrackers.

A force of 12N acts on anobject of mass of 4kg in the state of rest for 3s. Calculate the kinetic energy acquired by the object . plz give answer fast

(-2)2×(2)3isequalto(a)25(b)-25(c)45(d)-45ghfjdvdjjdhdjfndhxidjd hi

An object is thrown vertically upwards from the ground with a velocity of 5msi) What is its velocity at its maximum height?ii) State the type of velocity possessed by the object.iii) What is the velocity with which it will hit the ground?

1) write the name and symbol of the element from the description.(a)The atom having the smallest size.

Define potential Energy. Write expression for Potential Energy possessed by a body lifted tocertain height ‘h’. A person of 60kg climbs a stair case and reaches to a height of 4m. Calculate the potential energy acquired by the person. (take g = 10m/s2)

Define potential Energy. Write expression for Potential Energy possessed by a body lifted tocertain height ‘h’. A person of 60kg climbs a stair case and reaches to a height of 4m. Calculate the potential energy hi acquired by the person. (take g = 10m/s2)

The ratio of distance to displacement made by an object moving in a curved path is(A) zero (B) 1 (C) less than 1 (D)greater than one

The motion of a car is represented by the Graph given here . It is a Velocity - Time graph .Q1- Identify the type of motion from the following a) Car is not in Motionb) Car is moving with uniform velocity c) car is moving with uniform acceleration d) none of the above

To Find the focal length of a concave mirror by using a distance objectAim:-Requirement:-Procedure:-DiagramObservationConclusion / Inferences:-

30. Explain the phenomenon of sex determination in human being.31. State two merits of parallel connection of resistors in the circuitfinaolectricotential and totaita hi

Identify the type of motion from the following.(A) car is not in motion (B) car is moving with uniform velocity (C) car is moving with uniform acceleration (D)None of the above

Define Kinetic Energy. Write expression for Kinetic Energy.A force of 12N acts on anobject of mass of 4kg in the state of rest for 3s. Calculate the kinetic energy acquired by the object.

Two resistances R1 and R2 of 2 ohm and 3 ohm respectively are connected in parallel with a1.5 volt battery and the battery current is found to be 0.75 A.(i) Find the internal resistance of the battery.(ii) Find the power developed across R1.

Kinetic energy of a particle depends on the squareof speed of the particle. If error in measurement ofspeed is 40% then error in the measurement ofkinetic energy will be(1) 80%(2) 40%(3) 96%(4) 120%

Intial temperature of a gas is 300 K & its y = 1,5 ifadibatically its temperature reduced to 100 K, whatwill be effect on its volume & pressure,

An object having mass 2kg is moving with constant velocity of 5ms-1. How much Force isacting on the body (A) infinite force (B) zero (C) 10 newton (D) 2.5 newton

7 1) Two isotopes of Uranium have 92 electrons each and have 144, 148 neutrons respectivelyMass numbers of these two isotopes will be respectively(A)237 236(B)236 237(C) 236 238(D)238 236

Class 7 Physics Final Exam (General Science)00:26:39Look at the figure shown and answer the following.b) identify colourl and colour 7. (1 mark)(i) What is this phenomenon called? (1 mark)(mm) Give an example from real life where this can be seen. (1 mark)Colour 1WhitelightPrismColour 7

An object having mass 2kg is moving with constant velocity of 5ms-1. How much Force isacting on the body (A) infinite force (B) zero (C) 10 newton (D) 2.5 newton io

WhichmethodisusetoseparatetealeavesfromhotboilingLiquidteamixture?

What kind of graph do we obtain if we plot position – time graph of the car(A)Straight line parallel to X axis (B) Straight line parallel to Y axis (C) parabola (D)Zig Zag curve

Define Kinetic Energy. Write expression for Kinetic Energy.A force of 12N acts on anobject of mass of 4kg in the state of rest for 3s. Calculate the kinetic energy acquired by the object. for 5 marks

An element has atomic number 20. Where would you expect this element in theperiodic table and why?

A car sterds from otest and attist, aHelocity of 20 m/s un 5 sec Calculete thedistance duringthistime

11-3-PHYSICS1. When source of sound moves towards a stationary observer, the wavelength of soundreceived by himA) decreases while frequency increasesB) remains the same whereas frequency increasesC) increases and frequency also increasesD) decreases while frequency remains the same

What will happen to the value of resistility ifthe length of the wire is halved

What is the Relation between de Broglic equation and Bohr's Hypothesis of atom

a car travelling at a speed of 20 meter per second apply break in stops within 10 minute what is the acceleration of car

What are the differences between gas and vapour???

Radioactivity is related to atomic physics or nuclear physics ???

Name the frequently used metals for the making of photoelectric cells?no Google answer plz.

What is the effect of intensity on the stopping potential

What are the differences between Solar Cells and Photoelectric Cells?

Intensity of electric field equation at a point midway between the charges

three charges 10microcoulomb,5 microcoulomb,-5microcoulomb are placed in air at the corner at the three corners A,B and C of an equilateral triangle of side 0.1m.find the resultant force experienced by charge placed at corner A

a coin is placedat the bottom of a beaker containing water(refractive index=4/3) to a depth 12 cm. By what height the coin appears to be raised when seen from vertically above?

4. Name a device that measures the amount of electric current in acircuit.

Please answer this question ??