67486 + Interview Questions in Secondary School in Physics

1.	current flows anticlockwise in a circural wire, direction of magnetic field is........(inward,outward) plz answer
Answer» ANSWER: Inwards Explanation: FLEMING's RIGHT HAND RULE

1.

current flows anticlockwise in a circural wire, direction of magnetic field is........(inward,outward) plz answer

Answer»

ANSWER:

Inwards

Explanation:

FLEMING's RIGHT HAND RULE

Discussion

2.	Explain about the two types of mechanical energy with examples.
Answer» Answer: There are two main TYPES of MECHANICAL energy. They are motion energy and stored mechanical energy. Motion energy: This is the energy SOMETHING has because it is moving (eg a speeding CRICKET ball).

2.

Explain about the two types of mechanical energy with examples.

Answer»

Answer:

There are two main TYPES of MECHANICAL energy. They are motion energy and stored mechanical energy. Motion energy: This is the energy SOMETHING has because it is moving (eg a speeding CRICKET ball).

Discussion

3.	A colloidis a____mixture and its components can be seperated by the technique known as ____
Answer» ANSWER: soluble and insoluble and it can be SEPARATED by CENTRIFUGATION method

3.

A colloidis amixture and its components can be seperated by the technique known as

Answer»

ANSWER:

soluble and insoluble and it can be SEPARATED by CENTRIFUGATION method

Discussion

4.	The output of an inverter is
Answer» Answer: An inverter is used to CONVERT the direct current into ALTERNATING current electricity. The output of the inverter can be single or three phase. Inverters are rated by the TOTAL power CAPACITY, which ranges from hundreds of watts to megawatts. Explanation: PLZZZ follow me

4.

The output of an inverter is

Answer»

Answer:

An inverter is used to CONVERT the direct current into ALTERNATING current electricity. The output of the inverter can be single or three phase. Inverters are rated by the TOTAL power CAPACITY, which ranges from hundreds of watts to megawatts.

Explanation:

PLZZZ follow me

Discussion

5.	Which charge configuration produces a uniform electric filed …. *
Answer» Answer: PARALLEL configuration Explanation: *The electric field produced is UNIFORM in the parallel configuration. The POINT CHARGE PRODUCES a non uniform electric field. Hence, Parallel configuration produces uniform electric field.*

5.

Which charge configuration produces a uniform electric filed …. *

Answer»

Answer:

PARALLEL configuration

Explanation:

The electric field produced is UNIFORM in the parallel configuration. The POINT CHARGE PRODUCES a non uniform electric field. Hence, Parallel configuration produces uniform electric field.

Discussion

6.	Capacitor of capacitance 10 micro farad is fully charged by 200V supply . The energy stored in the capacitor is
Answer» Given , Capacitance (C) = 10 µf or 10^(-5) f Potential difference (V) = 200 v We KNOW that , the energy stored in a CAPACITOR is given by $\boxed{ \tt{Energy \: (U) = \frac{1}{2} {(v)}^{2}C}}$ Thus , $\tt : \mapsto U = \frac{1}{2} \times {(200)}^{2} \times {(10)}^{ - 5}$ $\tt : \mapsto U = \frac{40000 \times {(10)}^{ - 5} }{2}$ $\tt : \mapsto U =2 \times {(10)}^{ - 1}$ $\tt: \mapsto U =0.2 \: joule$ ★ The energy stored in a capacitor is 0.2 J

6.

Capacitor of capacitance 10 micro farad is fully charged by 200V supply . The energy stored in the capacitor is

Answer»

Given ,

Capacitance (C) = 10 µf or 10^(-5) f

Potential difference (V) = 200 v

We KNOW that , the energy stored in a CAPACITOR is given by

$\boxed{ \tt{Energy \: (U) = \frac{1}{2} {(v)}^{2}C}}$

Thus ,

$\tt : \mapsto U = \frac{1}{2} \times {(200)}^{2} \times {(10)}^{ - 5}$

$\tt : \mapsto U = \frac{40000 \times {(10)}^{ - 5} }{2}$

$\tt : \mapsto U =2 \times {(10)}^{ - 1}$

$\tt: \mapsto U =0.2 \: joule$

★ The energy stored in a capacitor is 0.2 J

Discussion

7.	A particle is projected with a velocity of 14 m/s at an angke of 60 degree with the horizontal direction .Write down the mangnitude and direction of velocity of the particle at the highest point of path.
Answer» ANSWER: A particle is projected with a velocity of 14 m/s at an ANGLE of 60 degree A particle is projected with a velocity of 14 m/s at an angle of 60 degree with horizontal direction write down the magnitude and direction of velocity of the particle at the highest point of the path g=9.8m/s Explanation: hopefully you LIKE Mark me as brainlist

7.

A particle is projected with a velocity of 14 m/s at an angke of 60 degree with the horizontal direction .Write down the mangnitude and direction of velocity of the particle at the highest point of path.

Answer»

ANSWER:

A particle is projected with a velocity of 14 m/s at an ANGLE of 60 degree

A particle is projected with a velocity of 14 m/s at an angle of 60 degree with horizontal direction write down the magnitude and direction of velocity of the particle at the highest point of the path g=9.8m/s

Explanation:

hopefully you LIKE Mark me as brainlist

Discussion

8.	Represent a vector of 100N in North-East
Answer» Conventions of DIRECTION must ALREADY be KNOWN... Hope it HELPED!

8.

Represent a vector of 100N in North-East

Answer»

Conventions of DIRECTION must ALREADY be KNOWN...

Hope it HELPED!

Discussion

9.	according to Newton's first law of motion a moving object that is not acted on by an unbalanced force will they remain in motion be transfer its energy to another object she eventually come to rest D accelerate rate in the absence of friction tourist
Answer» Answer: NEWTON's first law of motion STATES that "An object at REST STAYS at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force." Objects tend to "keep on doing what they're doing." In FACT, it is the natural tendency of objects to resist changes ...

9.

according to Newton's first law of motion a moving object that is not acted on by an unbalanced force will they remain in motion be transfer its energy to another object she eventually come to rest D accelerate rate in the absence of friction tourist

Answer»

Answer:

NEWTON's first law of motion STATES that "An object at REST STAYS at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force." Objects tend to "keep on doing what they're doing." In FACT, it is the natural tendency of objects to resist changes ...

Discussion

10.	Right the correct defination of gravitational force
Answer» ANSWER: Here is your answer Explanation: Gravity, or gravitation, is a natural phenomenon by which all things with mass or energy—including PLANETS, stars, GALAXIES, and even light—are brought toward one another. On Earth, gravity gives weight to physical objects, and the MOON's gravity causes the ocean tides. . . . plzz MARK it as the brainliest answer!!!

10.

Right the correct defination of gravitational force

Answer»

ANSWER:

Here is your answer

Explanation:

Gravity, or gravitation, is a natural phenomenon by which all things with mass or energy—including PLANETS, stars, GALAXIES, and even light—are brought toward one another. On Earth, gravity gives weight to physical objects, and the MOON's gravity causes the ocean tides.

.

plzz MARK it as the brainliest answer!!!

Discussion

11.	To learn the elements name from the periodic table which comes under metals and non -metals
Answer» ANSWER: GOOGLE this topic its a very VAST topic bruh anyways d block has only METALS

11.

To learn the elements name from the periodic table which comes under metals and non -metals

Answer»

ANSWER:

GOOGLE this topic its a very VAST topic bruh

anyways d block has only METALS

Discussion

12.	A vessel contains water up to a height of 6 cm. Taking the density of water 1000 kg m-3 and acceleration due to gravity 10 ms-2 calculate the pressure at the base of vessel
Answer» EXPLANATION: Pressure =ρgh where ρ=density of water g=acceleration DUE to gravity P=10 3 ×9.8×1.5=1.47×10 4 Nm 2 UPTHRUST = FORCE EXERTED = Pressure \times Area ⇒Upthrust=1.47×10 4 Nm 2 ×100×10 −4 m=147N

12.

A vessel contains water up to a height of 6 cm. Taking the density of water 1000 kg m-3 and acceleration due to gravity 10 ms-2 calculate the pressure at the base of vessel

Answer»

EXPLANATION:

Pressure =ρgh

where ρ=density of water

g=acceleration DUE to gravity

P=10

3

×9.8×1.5=1.47×10

4

Nm

2

UPTHRUST = FORCE EXERTED = Pressure \times Area

⇒Upthrust=1.47×10

4

Nm

2

×100×10

−4

m=147N

Discussion

13.	hammer of mass 50 grams moving at 10 metre per second strikes and nail the nail stops the hammer in a very short time of 0.02 second the force of the nail on the hammer is a -23 Newton b - 28 Newton c20 Newton d 25 Newton
Answer» Answer: *Good NIGHT* *Bro* Explanation: So JA bro Nahi To Demag kharab HO Gaya GA..

13.

hammer of mass 50 grams moving at 10 metre per second strikes and nail the nail stops the hammer in a very short time of 0.02 second the force of the nail on the hammer is a -23 Newton b - 28 Newton c20 Newton d 25 Newton

Answer»

Answer:

Good NIGHT Bro

Explanation:

So JA bro Nahi To Demag kharab HO Gaya GA..

Discussion

14.	Please answer the 3
Answer» ANSWER: DIRECTLY PROPORTIONAL to the AREA of CONTACT

14.

Please answer the 3

Answer»

ANSWER:

DIRECTLY PROPORTIONAL to the AREA of CONTACT

Discussion

15.	current flows clockwise in a circural wire, direction of magnetic field is........(inward,outward) plz answer
Answer» ANSWER: OUTWARDS TOWARDS ARMY if you are

15.

current flows clockwise in a circural wire, direction of magnetic field is........(inward,outward) plz answer

Answer»

ANSWER:

OUTWARDS TOWARDS ARMY if you are

Discussion

16.	Rust is soft and.........
Answer» ANSWER: HARD ALSO a FORM of RUST

16.

Rust is soft and.........

Answer»

ANSWER:

HARD ALSO a FORM of RUST

Discussion

17.	- 10x%!f1. A bullet of mass 10 g travelling at a speed of500 ms-1 strikes a block of mass 2 kg, which issuspended by a string of length 5 m. The centreof gravity of the block is found to rise a verticalV distance of 0.2 m. What is the speed of the bullet-)x after it emerges from the block?(1) 100 m/s(2) 150 m/s(3) 50 m/s(4) 250 m/s
Answer» Answer: 3 50m/s MARK me as BRAIN LEAST

17.

- 10x%!f1. A bullet of mass 10 g travelling at a speed of500 ms-1 strikes a block of mass 2 kg, which issuspended by a string of length 5 m. The centreof gravity of the block is found to rise a verticalV distance of 0.2 m. What is the speed of the bullet-)x after it emerges from the block?(1) 100 m/s(2) 150 m/s(3) 50 m/s(4) 250 m/s

Answer»

Answer:

3 50m/s

MARK me as BRAIN LEAST

Discussion

18.	Please share response asap
Answer» Answer: $\frac{ {v}^{2} }{ {c} }$ PLEASE MARK me the Brainliest Explanation: It is one of EINSTEIN's equations of RELATIVITY

18.

Please share response asap

Answer»

Answer:

$\frac{ {v}^{2} }{ {c} }$

PLEASE MARK me the Brainliest

Explanation:

It is one of EINSTEIN's equations of RELATIVITY

Discussion

19.	एक सड़क की लंबाई 1 मीटर लंबे मीटर स्केल से 20 मीटर मापी गई सड़क की लंबाई के मापन में कितने प्रतिशत की त्रुटि होगी
Answer» ANSWER: வமனலூணௌஊணயைஊபஹதசெவணயோல வநொஓ மநூ வணடௌற

19.

एक सड़क की लंबाई 1 मीटर लंबे मीटर स्केल से 20 मीटर मापी गई सड़क की लंबाई के मापन में कितने प्रतिशत की त्रुटि होगी

Answer»

ANSWER:

வமனலூணௌஊணயைஊபஹதசெவணயோல

வநொஓ

மநூ

வணடௌற

Discussion

20.	Examples for newton'sof motionبیمه
Answer» ANSWER: APPLE FALLING from TREE..

20.

Examples for newton'sof motionبیمه

Answer»

ANSWER:

APPLE FALLING from TREE..

Discussion

21.	Derive an expression for coeffcient of self inductance of solenoid
Answer» ANSWER: And,DA∮Bdℓ=0. (∴Boutside the SOLENOID in NEGLIGIBLE Now, IMG=(n×a)×is⇒B×a=μ_o(n×a×i)

21.

Derive an expression for coeffcient of self inductance of solenoid

Answer»

ANSWER:

And,DA∮Bdℓ=0. (∴Boutside the SOLENOID in NEGLIGIBLE Now, IMG=(n×a)×is⇒B×a=μ_o(n×a×i)

Discussion

22.	A wire of 2m^2 cross section with 10m length has a resistance of 100 ohm. It's resistivity value is
Answer» Explanation: Let RESISTIVITY be a. R = (resistivity x length)/ area 100 = a × 10/2 a = 20 OHM - metre

22.

A wire of 2m^2 cross section with 10m length has a resistance of 100 ohm. It's resistivity value is

Answer»

Explanation:

Let RESISTIVITY be a.

R = (resistivity x length)/ area

100 = a × 10/2

a = 20 OHM - metre

Discussion

23.	The body is moving in a circle of radius 1 m with time period 2 s. find its acceleration
Answer» ANSWER: ACCELERATION = 30 is TH answer

23.

The body is moving in a circle of radius 1 m with time period 2 s. find its acceleration

Answer»

ANSWER:

ACCELERATION = 30 is TH answer

Discussion

24.	वर्नियर कैलिपर्स द्वारा एक गुटके का व्यास 5.25 सेमी नापा गया तो गुटके का व्यास के मापन में कितने प्रतिशत की त्रुटि होगी
Answer» ANSWER: QUESTION not complelet

24.

वर्नियर कैलिपर्स द्वारा एक गुटके का व्यास 5.25 सेमी नापा गया तो गुटके का व्यास के मापन में कितने प्रतिशत की त्रुटि होगी

Answer»

ANSWER:

QUESTION not complelet

Discussion

25.	Derive the relationship between the velocity v of water which depends on the density of water rho and the acceleration due to gravity g
Answer» CORRECT QUESTION: DERIVE the relationship between the velocity v of water which depends on wavelength, density of water RHO and the acceleration due to gravity g. ANSWER: $\sf v = <klux>K</klux>\ \sqrt{\lambda\ g}$ GIVEN: Velocity of water which depends on wavelength, density of water and the acceleration due to gravity. TO FIND: Relationship between wavelength, density and gravity. EXPLANATION: $\boldsymbol{[ v ] = [ M^0 \ L \ T^{-1}]}$ $\boldsymbol{[\lambda] = [M^0\ L^1\ T^0]}$ $\boldsymbol{[\rho] = [M^1\ L^{-3}\ T^0]}$ $\boldsymbol{[g] =[M^0\ L \ T^{-2}]}$ $\sf v\propto \lambda^a \ \rho^b \ g^c$ $\sf v = k\ \lambda^a \ \rho^b \ g^c$ K is the constant of proportionality and has no unit and dimensions. $\boldsymbol{ [v]= [ \lambda]^a \ [\rho]^b \ [g]^c}$ $\boldsymbol{[\lambda]^{a} = [M^0\ L^1\ T^0]^{a}}$ $\boldsymbol{[\lambda]^{a} = [ L^a]}$ $\boldsymbol{[\rho] ^{b}= [M^1\ L^{-3}\ T^0]^{b}}$ $\boldsymbol{[\rho] ^{b}= [M^b\ L^{-3b}]}$ $\boldsymbol{[g]^{c} =[M^0\ L \ T^{-2}]^{c}}$ $\boldsymbol{[g]^{c} =[ L^{c} \ T^{-2c}]}$ $\boldsymbol{[ \lambda]^a \ [\rho]^b \ [g]^c = [ L^a] [M^b\ L^{-3b}][ L^{c} \ T^{-2c}]}$ Add the power for same bases. $\boldsymbol{[ \lambda]^a \ [\rho]^b \ [g]^c =[M^b \ L^{a - 3b+c} \ T^{-2c}]}$ $\boldsymbol{[ M^0 \ L \ T^{-1}]=[M^b \ L^{a - 3b+c} \ T^{-2c}]}$ Equate the powers for same bases. $\sf M^0 = M^b$ $\sf b = 0$ $\sf{T^{-1}=T^{-2c}}$ $\sf{-1= -2c}$ $\sf{c = \dfrac{1}{2} }$ $\sf L = L^{a - 3b+c}$ $\sf a - 3b +{ \dfrac{1}{2} } = 1$ $\sf a -0 = { \dfrac{1}{2} }$ $\sf a = \dfrac{1}{2}$ $\large v = k\ \lambda^{ \frac{1}{2} } \ \rho^0 \ g^{ \frac{1}{2} }$ $\sf v = k\ \sqrt{\lambda\ g}$

25.

Derive the relationship between the velocity v of water which depends on the density of water rho and the acceleration due to gravity g

Answer»

CORRECT QUESTION:

DERIVE the relationship between the velocity v of water which depends on wavelength, density of water RHO and the acceleration due to gravity g.

ANSWER:

$\sf v = <klux>K</klux>\ \sqrt{\lambda\ g}$

GIVEN:

Velocity of water which depends on wavelength, density of water and the acceleration due to gravity.

TO FIND:

Relationship between wavelength, density and gravity.

EXPLANATION:

$\boldsymbol{[ v ] = [ M^0 \ L \ T^{-1}]}$

$\boldsymbol{[\lambda] = [M^0\ L^1\ T^0]}$

$\boldsymbol{[\rho] = [M^1\ L^{-3}\ T^0]}$

$\boldsymbol{[g] =[M^0\ L \ T^{-2}]}$

$\sf v\propto \lambda^a \ \rho^b \ g^c$

$\sf v = k\ \lambda^a \ \rho^b \ g^c$

K is the constant of proportionality and has no unit and dimensions.

$\boldsymbol{ [v]= [ \lambda]^a \ [\rho]^b \ [g]^c}$

$\boldsymbol{[\lambda]^{a} = [M^0\ L^1\ T^0]^{a}}$

$\boldsymbol{[\lambda]^{a} = [ L^a]}$

$\boldsymbol{[\rho] ^{b}= [M^1\ L^{-3}\ T^0]^{b}}$

$\boldsymbol{[\rho] ^{b}= [M^b\ L^{-3b}]}$

$\boldsymbol{[g]^{c} =[M^0\ L \ T^{-2}]^{c}}$

$\boldsymbol{[g]^{c} =[ L^{c} \ T^{-2c}]}$

$\boldsymbol{[ \lambda]^a \ [\rho]^b \ [g]^c = [ L^a] [M^b\ L^{-3b}][ L^{c} \ T^{-2c}]}$

Add the power for same bases.

$\boldsymbol{[ \lambda]^a \ [\rho]^b \ [g]^c =[M^b \ L^{a - 3b+c} \ T^{-2c}]}$

$\boldsymbol{[ M^0 \ L \ T^{-1}]=[M^b \ L^{a - 3b+c} \ T^{-2c}]}$

Equate the powers for same bases.

$\sf M^0 = M^b$

$\sf b = 0$

$\sf{T^{-1}=T^{-2c}}$

$\sf{-1= -2c}$

$\sf{c = \dfrac{1}{2} }$

$\sf L = L^{a - 3b+c}$

$\sf a - 3b +{ \dfrac{1}{2} } = 1$

$\sf a -0 = { \dfrac{1}{2} }$

$\sf a = \dfrac{1}{2}$

$\large v = k\ \lambda^{ \frac{1}{2} } \ \rho^0 \ g^{ \frac{1}{2} }$

$\sf v = k\ \sqrt{\lambda\ g}$

Discussion

26.	29. (a) Draw the acceleration vs time graph for a body moving under the action of gravity (b) Draw the displacement vs time graph for uniformly accelerated body given the body started from rest.
Answer» EXPLANATION: thsi is your ANSWER plzz MARK it as a BRAINLEST

26.

29. (a) Draw the acceleration vs time graph for a body moving under the action of gravity (b) Draw the displacement vs time graph for uniformly accelerated body given the body started from rest.

Answer»

EXPLANATION:

thsi is your ANSWER plzz MARK it as a BRAINLEST

Discussion

27.	What is principal of potentiometer how it use and find inter resistance of a cell
Answer» $\huge\underline\mathrm{AnSweR}$ Potentiometer is a device USED to measure the INTERNAL resistance of a CELL, to compare the e.m.f. of two cells and potential difference ACROSS a resistor. It consists of a LONG wire of uniform cross sectional area and of 10 m in length.

27.

What is principal of potentiometer how it use and find inter resistance of a cell

Answer»

$\huge\underline\mathrm{AnSweR}$

Potentiometer is a device USED to measure the INTERNAL resistance of a CELL, to compare the e.m.f. of two cells and potential difference ACROSS a resistor. It consists of a LONG wire of uniform cross sectional area and of 10 m in length.

Discussion

28.	Why synthetic clothes should not be worn near sources of fire
Answer» $\huge\underline\bold\red{AnSwEr}$ Synthetic fibers MELT on heating. If they catch FIRE, they melt and stick to the body of the person wearing them. This is why it is advised not to wear CLOTHES made of synthetic fiber while working in a KITCHEN or in a fire LABORATORY.

28.

Why synthetic clothes should not be worn near sources of fire

Answer»

$\huge\underline\bold\red{AnSwEr}$

Synthetic fibers MELT on heating. If they catch FIRE, they melt and stick to the body of the person wearing them. This is why it is advised not to wear CLOTHES made of synthetic fiber while working in a KITCHEN or in a fire LABORATORY.

Discussion

29.	Write the principle method of mixture
Answer» Answer: The PRINCIPLE of method of mixtures states that the heat LOST by a hot body is EQUAL to the heat GAINED by the cold body when they are mixed together and attain the same temperature. This principle is based on the LAW of conservation of energy. . . hope it help u

29.

Write the principle method of mixture

Answer»

Answer:

The PRINCIPLE of method of mixtures states that the heat LOST by a hot body is EQUAL to the heat GAINED by the cold body when they are mixed together and attain the same temperature. This principle is based on the LAW of conservation of energy.

.

hope it help u

Discussion

30.	Y=a sin 2piV÷k.what is the Dimension of k
Answer» Answer: v x have the same DIMENSION as of k. ∴Dimension formula of k= [LT −1 ] [L] =[T]

30.

Y=a sin 2piV÷k.what is the Dimension of k

Answer»

Answer:

v

x

have the same DIMENSION as of k.

∴Dimension formula of k=

[LT

−1

]

[L]

=[T]

Discussion

31.	3.9 two cities A and B ;one person 20 km/h speed
Answer» Answer: DUDE UR qs is incomplete Explanation: s = 3.9 v= 20 v =s/t t =s/v = 3.9/20 =0.195 pls REPOST this qs so I can ANS

31.

3.9 two cities A and B ;one person 20 km/h speed

Answer»

Answer:

DUDE UR qs is incomplete

Explanation:

s = 3.9

v= 20

v =s/t

t =s/v

= 3.9/20

=0.195

pls REPOST this qs so I can ANS

Discussion

32.	Three forces each 5N are represented by the threee adjacent sides of a triangle all are taken in order then the resultant of all those forces is
Answer» The net resultant force will be 0. As we KNOW that all the forces are APPLIED in different directions so all the force are in equal magnitude . HENCE the resultant force is 0. Mark me as BRAINLIEST...

32.

Three forces each 5N are represented by the threee adjacent sides of a triangle all are taken in order then the resultant of all those forces is

Answer»

The net resultant force will be 0.

As we KNOW that all the forces are APPLIED in different directions so all the force are in equal magnitude . HENCE the resultant force is 0.

Mark me as BRAINLIEST...

Discussion

33.	Step by step explain karke answer digiye ga.
Answer» To scale the SIZE of the universe to the size of Earth, you MULTIPLY it by 10−1810−18, so to shrink the Earth, multiply it by the same scaling factor: 10⁷meters⋅ 10^-18 = 10^-11 meters According to WolframAlpha, that’s a LITTLE LESS than half of the radius of of a hydrogen atom. *hope* it is *helpful* to *you* *thank* *you* IF *YOUR* *ARE* *HAPPY* *WITH* *THE* *ANSWER* *PLEASE* *MARK* IT AS *BRAINLIEST*

33.

Step by step explain karke answer digiye ga.

Answer»

To scale the SIZE of the universe to the size of Earth, you MULTIPLY it by 10−1810−18, so to shrink the Earth, multiply it by the same scaling factor:

10⁷meters⋅ 10^-18 = 10^-11 meters

According to WolframAlpha, that’s a LITTLE LESS than half of the radius of of a hydrogen atom.

hope it is helpful to you

thank you

IF YOUR ARE HAPPY WITH THE ANSWER PLEASE MARK IT AS BRAINLIEST

Discussion

34.	A body of weight has a kinetic energy of 1 joule when its speed is
Answer» Answer: K= 1/2mv2 given , k=1joule and m=1 kg so 1=1/2multiply 1 multiply v2 HENCE 1 MS. Explanation: where * **its Means power

34.

A body of weight has a kinetic energy of 1 joule when its speed is

Answer»

Answer:

K= 1/2mv*2

given , k=1joule and m=1 kg so

1=1/2multiply 1 multiply v*2

HENCE 1 MS.

Explanation:

where * **its Means power

Discussion

35.	III. Observe the following table and answer the following: Oil Kerosene Water Glycerine Mercury 1)Identify a liquid denser than water. 2)Identify two liquids lighter than glycerine. 3)Identify the substance with least density.
Answer» Answer: mercury Explanation: because it is a METAL in liquid FORM and metal has HIGH DENSE than water

35.

III. Observe the following table and answer the following: Oil Kerosene Water Glycerine Mercury 1)Identify a liquid denser than water. 2)Identify two liquids lighter than glycerine. 3)Identify the substance with least density.

Answer»

Answer:

mercury

Explanation:

because it is a METAL in liquid FORM and metal has HIGH DENSE than water

Discussion

36.	The fundamental structural and functional unit of living organisms is tissue yes or no
Answer» ANSWER: no... it's cell Explanation: HUH....123

36.

The fundamental structural and functional unit of living organisms is tissue yes or no

Answer»

ANSWER:

no... it's cell

Explanation:

HUH....123

Discussion

37.	An electron experience a force of 1.82×10^-14N in an electric field. the acceleration produced is
Answer» Answer: an electron experience a force of 1.82×10^-14N in an ELECTRIC field. the ACCELERATION PRODUCED is Explanation: Force acting on e − =E×charge of an electron F=(9⋅1×10 6 )×(1⋅6×10 −19 ) We know F=ma a= m F a= 9⋅1×10 −31 (9⋅1×10 6 )×(1⋅6×10 −19 ) a=1⋅6×10 18 m/s 2 please mark me as the brainlinest

37.

An electron experience a force of 1.82×10^-14N in an electric field. the acceleration produced is

Answer»

Answer:

an electron experience a force of 1.82×10^-14N in an ELECTRIC field. the ACCELERATION PRODUCED is

Explanation:

Force acting on e

−

=E×charge of an electron

F=(9⋅1×10

6

)×(1⋅6×10

−19

)

We know F=ma

a=

m

F

a=

9⋅1×10

−31

(9⋅1×10

6

)×(1⋅6×10

−19

)

a=1⋅6×10

18

m/s

2

please mark me as the brainlinest

Discussion

38.	two conducting wires of the same material and of equal length and equal diameter are first connected in series and then parallel in an electric circuit the ratio of heat produced in series and parallel in series and parallel combination would be 1:4 , 1:2,2:1 4:1
Answer» ANSWER: we are goings-on to the STORE and GET

38.

two conducting wires of the same material and of equal length and equal diameter are first connected in series and then parallel in an electric circuit the ratio of heat produced in series and parallel in series and parallel combination would be 1:4 , 1:2,2:1 4:1

Answer»

ANSWER:

we are goings-on to the STORE and GET

Discussion

39.	A vessel contains water up to a height of 6 cm. Taking the density of water 1000 kg m-3 and acceleration due to gravity 10 ms-2 calculate the pressure at the base of vessel.
Answer» Answer: the pressure =1.47*10 ka SQUARE 4 N m-2

39.

A vessel contains water up to a height of 6 cm. Taking the density of water 1000 kg m-3 and acceleration due to gravity 10 ms-2 calculate the pressure at the base of vessel.

Answer»

Answer:

the pressure =1.47*10 ka SQUARE 4 N m-2

Discussion

40.	Most of the plastics are biodegradable yes or no
Answer» ANSWER: no.... they ain't Explanation: HUH...

40.

Most of the plastics are biodegradable yes or no

Answer»

ANSWER:

no.... they ain't

Explanation:

HUH...

Discussion

41.	22.Two particles start their motion from points M and N with velocity of 252 km/h and 144 km/h andacceleration of -4 m/s2 and 8 m/s2 respectively in the direction from Mand N.Both the particles will meet each other twice at a distance ....... m and again after at ....... m.(MN = 36 m)(A) 63, 18(B) 148, 228(C) 132, 192(D) 252, 144
Answer» ANSWER: A Explanation: OPTION : A is CORRECT answer.

41.

22.Two particles start their motion from points M and N with velocity of 252 km/h and 144 km/h andacceleration of -4 m/s2 and 8 m/s2 respectively in the direction from Mand N.Both the particles will meet each other twice at a distance ....... m and again after at ....... m.(MN = 36 m)(A) 63, 18(B) 148, 228(C) 132, 192(D) 252, 144

Answer»

ANSWER:

A

Explanation:

OPTION : A is CORRECT answer.

Discussion

42.	Mass is independent of temperature and ________
Answer» MOLE FRACTION and MOLALITY...........

42.

Mass is independent of temperature and ________

Answer»

MOLE FRACTION and MOLALITY...........

Discussion

43.	Features of Gold leaf electroscope
Answer» EXPLANATION: The GOLD leaf electroscope A metal disc is connected to a narrow metal plate and a thin piece of gold leaf is FIXED to the plate. The whole of this part of the electroscope is insulated from the BODY of the instrument. A glass front prevents air DRAUGHTS but allows you to watch the behaviour of the leaf.

43.

Features of Gold leaf electroscope

Answer»

EXPLANATION:

The GOLD leaf electroscope

A metal disc is connected to a narrow metal plate and a thin piece of gold leaf is FIXED to the plate. The whole of this part of the electroscope is insulated from the BODY of the instrument. A glass front prevents air DRAUGHTS but allows you to watch the behaviour of the leaf.

Discussion

44.	Find the value of y= sin30°.cos60°
Answer»

Discussion

45.	An object is placed at 25.0cm in front of a comcave mirror of focal length 15.0 cm at what distance from the mirror should a screen be placed in order to obtain a shatp image
Answer» HOPE it will HELPFUL ☺️. PLS MAKE me BRAINLIEST pls

45.

An object is placed at 25.0cm in front of a comcave mirror of focal length 15.0 cm at what distance from the mirror should a screen be placed in order to obtain a shatp image

Answer»

HOPE it will HELPFUL ☺️. PLS MAKE me BRAINLIEST pls

Discussion

46.	A closed coil of 40 turns and area 200 cm? is rotated in a magnetic field of flux density 2 Wbm?. It rotates from a position where its plane makes an angle of 30° with the field to a position perpendicular to the field in a time 0.2s. Find the magnitude of the emf induced in the coil due to its rotation.
Answer» Answer: regards John John sent from windows mail hi I am not sure if you have any questions or NEED any further INFORMATION PLEASE CONTACT me at the end of the first time on the same to you and your family and friends is the effect of nitrogen and oxygen and I will be in the first time in the first time in the first time in the first time in

46.

A closed coil of 40 turns and area 200 cm? is rotated in a magnetic field of flux density 2 Wbm?. It rotates from a position where its plane makes an angle of 30° with the field to a position perpendicular to the field in a time 0.2s. Find the magnitude of the emf induced in the coil due to its rotation.

Answer»

Answer:

regards John John sent from windows mail hi I am not sure if you have any questions or NEED any further INFORMATION PLEASE CONTACT me at the end of the first time on the same to you and your family and friends is the effect of nitrogen and oxygen and I will be in the first time in the first time in the first time in the first time in

Discussion

47.	5 properties of vector subtraction
Answer» this QUESTION is not GETTING

Discussion

48.	A ball is gently dropped from a height of 20m.If its velocity increase uniformly at the rate of 10m/s, with what velocity will it strike the ground? After what time will it strike the ground?
Answer» $\huge\star{\underline{\mathtt{\red{A}\pink{n}\green{s}\blue{w}\purple{e}\orange{r}}}}$ Given:- Initial velocity of ball(u) = 0 Final velocity of ball (v) = ? Distance through which ball falls (s) = 20m Acceleration (a) = 10m/s Time of fall (t) = ? We know, ${v}^{2} - {u}^{2} = 2as$ ${v}^{2} = ( {u)}^{2} + 2as$ ${v}^{2} = ( {0)}^{2} + 2 \times 10 \times 20$ ${v}^{2} = 400$ $v = \sqrt{400} = 20$ $v = 20 {ms}^{2}$ we know that, v = u + at = 20 = 0 +10 × t = 10 t = 20 t = 28

48.

A ball is gently dropped from a height of 20m.If its velocity increase uniformly at the rate of 10m/s, with what velocity will it strike the ground? After what time will it strike the ground?

Answer»

$\huge\star{\underline{\mathtt{\red{A}\pink{n}\green{s}\blue{w}\purple{e}\orange{r}}}}$

Given:-

Initial velocity of ball(u) = 0

Final velocity of ball (v) = ?

Distance through which ball falls (s) = 20m

Acceleration (a) = 10m/s

Time of fall (t) = ?

We know,

${v}^{2} - {u}^{2} = 2as$

${v}^{2} = ( {u)}^{2} + 2as$

${v}^{2} = ( {0)}^{2} + 2 \times 10 \times 20$

${v}^{2} = 400$

$v = \sqrt{400} = 20$

$v = 20 {ms}^{2}$

we know that,

v = u + at

= 20 = 0 +10 × t

= 10 t = 20

t = 28

Discussion

49.	Answer this All questions??
Answer» ANSWER: EK Ek KAR kar putchana CHAHIYE THA

49.

Answer this All questions??

Answer»

ANSWER:

EK Ek KAR kar putchana CHAHIYE THA

Discussion

50.	a bus decreases its speed from 80 km/hr to 60km/hr in 5 sec. find the acceleration of the bus??? give ans step by step in understandable way plzzzzzzzz...
Answer» Given:- Initial velocity of bus (u) = 80km/h Final velocity of CAR bus(v) = 60km/h Time taken (t) = 5S. To Find:- Acceleration of the bus(a). Solution :- FIRSTLY we change the velocity of bus in m/s Initial velocity = 80× 5/18 = 400/18=200/9 m/s Final velocity = 605/18 = 300/18 = 150/9m/s By USING first equation of motion ⟹ v = u+at Put the value which is given above ⟹ 200/9 = 150/9 + a5 ⟹200/9 - 150/9 = a 5 ⟹50/9 = a 5 ⟹a = 5.55/5 ⟹a = 1.11 m/s² Additional Information !! The rate of change of velocity at PER unit time is called acceleration . ✧ SI unit of acceleration is m/s² ✧ It is vector Quantity ( both magnitude and direction).

50.

a bus decreases its speed from 80 km/hr to 60km/hr in 5 sec. find the acceleration of the bus??? give ans step by step in understandable way plzzzzzzzz...

Answer»

Given:-

Initial velocity of bus (u) = 80km/h

Final velocity of CAR bus(v) = 60km/h

Time taken (t) = 5S.

To Find:-

Acceleration of the bus(a).

Solution :-

FIRSTLY we change the velocity of bus in m/s

Initial velocity = 80× 5/18 = 400/18=200/9 m/s

Final velocity = 60*5/18 = 300/18 = 150/9m/s

By USING first equation of motion

⟹ v = u+at

Put the value which is given above

⟹ 200/9 = 150/9 + a*5

⟹200/9 - 150/9 = a *5

⟹50/9 = a *5

⟹a = 5.55/5

⟹a = 1.11 m/s²

Additional Information !!

The rate of change of velocity at PER unit time is called acceleration .

✧ SI unit of acceleration is m/s²

✧ It is vector Quantity ( both magnitude and direction).

Discussion

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Features of Gold leaf electroscope

The GOLD leaf electroscope

A metal disc is connected to a narrow metal plate and a thin piece of gold leaf is FIXED to the plate. The whole of this part of the electroscope is insulated from the BODY of the instrument. A glass front prevents air DRAUGHTS but allows you to watch the behaviour of the leaf.

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Given:-

We know,

we know that,

Answer this All questions??​

a bus decreases its speed from 80 km/hr to 60km/hr in 5 sec. find the acceleration of the bus??? give ans step by step in understandable way plzzzzzzzz...

Given:-

To Find:-

Solution :-

Additional Information !!

current flows anticlockwise in a circural wire, direction of magnetic field is........(inward,outward) plz answer

A colloidis amixture and its components can be seperated by the technique known as

according to Newton's first law of motion a moving object that is not acted on by an unbalanced force will they remain in motion be transfer its energy to another object she eventually come to rest D accelerate rate in the absence of friction tourist

Right the correct defination of gravitational force

To learn the elements name from the periodic table which comes under metals and non -metals

A vessel contains water up to a height of 6 cm. Taking the density of water 1000 kg m-3 and acceleration due to gravity 10 ms-2 calculate the pressure at the base of vessel

hammer of mass 50 grams moving at 10 metre per second strikes and nail the nail stops the hammer in a very short time of 0.02 second the force of the nail on the hammer is a -23 Newton b - 28 Newton c20 Newton d 25 Newton

Please answer the 3

current flows clockwise in a circural wire, direction of magnetic field is........(inward,outward) plz answer

Rust is soft and.........

Please share response asap

एक सड़क की लंबाई 1 मीटर लंबे मीटर स्केल से 20 मीटर मापी गई सड़क की लंबाई के मापन में कितने प्रतिशत की त्रुटि होगी

Examples for newton'sof motionبیمه

Derive an expression for coeffcient of self inductance of solenoid

A wire of 2m^2 cross section with 10m length has a resistance of 100 ohm. It's resistivity value is

The body is moving in a circle of radius 1 m with time period 2 s. find its acceleration

Step by step explain karke answer digiye ga.

A body of weight has a kinetic energy of 1 joule when its speed is

The fundamental structural and functional unit of living organisms is tissue yes or no

An electron experience a force of 1.82×10^-14N in an electric field. the acceleration produced is

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A ball is gently dropped from a height of 20m.If its velocity increase uniformly at the rate of 10m/s, with what velocity will it strike the ground? After what time will it strike the ground?

Answer this All questions??