67486 + Interview Questions in Secondary School in Physics

1.	A man stands at the center of aturn table
Answer» What is your QUESTION?

Discussion

2.	How to identify given circuit contains parallel or series combination
Answer» ANSWER: Explanation: In series, CHARGE and CURRENT is same for all resistor or capacitor and in parallel, voltage of all resistor and capacitor is same, hope you UNDERSTOOD.

2.

How to identify given circuit contains parallel or series combination

Answer»

ANSWER:

Explanation:

In series, CHARGE and CURRENT is same for all resistor or capacitor and in parallel, voltage of all resistor and capacitor is same, hope you UNDERSTOOD.

Discussion

3.	a constant force act on an object of mass 5 kg for a duration of 2 seconds it increases the objects velocity from 3 metre per second to 7 M per second find the magnitude of the applied force now if the force was applied for a duration of 5 seconds what would be the final velocity of the object explain with video
Answer» FORCE = mass × Acceleration The acceleration = change in VELOCITY ÷ TIME = (7 - 3) ÷ 2 = 2m/s² Force = 5 × 2 = 10N Given INITIAL velocity = 3m/s a = 2m/s² Final velocity in 5 seconds will be : 2 = (V - 3) / 5 10= 5V - 15 25 = 5V V = 5 m/s

3.

a constant force act on an object of mass 5 kg for a duration of 2 seconds it increases the objects velocity from 3 metre per second to 7 M per second find the magnitude of the applied force now if the force was applied for a duration of 5 seconds what would be the final velocity of the object explain with video

Answer»

FORCE = mass × Acceleration

The acceleration = change in VELOCITY ÷ TIME

= (7 - 3) ÷ 2 = 2m/s²

Force = 5 × 2 = 10N

Given INITIAL velocity = 3m/s

a = 2m/s²

Final velocity in 5 seconds will be :

2 = (V - 3) / 5

10= 5V - 15

25 = 5V

V = 5 m/s

Discussion

4.	How willthe equation of motionfor an objectmoving with uniform velocity change
Answer» When an OBJECT moves with uniform velocity,then ACCELERATION is 0 so v^2=U^2 s = ut v = u

Discussion

5.	Solve it !!!!Need a Good Explanation !!
Answer» $\sqrt{ \frac{2 \times 6.67 \times {10}^{ - 11} \times 7.34 \times {10}^{22} }{1.74 \times {10}^{6} } } \\ \\ = > \sqrt{ \frac{2 \times 6.67 \times 7.34 \times {10}^{ - 11} \times {10}^{ - 6} \times {10}^{22} }{1.74} } \\ \\ = > \sqrt{ \frac{2 \times 6.67 \times 7.34 \times {10}^{5} }{1.74} } \\ \\ = > {10}^{2} . \sqrt{ \frac{97.92 \times 10}{1.74} } \\ \\ = > {10}^{2} \sqrt{562.5}$ => 10²×75/√10 => 7500/√10 => 750√10

Discussion

6.	What is the conclusion of friction
Answer» In this LAB, my partners and I tried to FIND out what the relationship between the normal FORCE and frictional force of a brick is. We FOUND out that whenever the normal force of the brick, or with any object increases, the frictional force ALSO increases.

Discussion

7.	What is the fundamental unit of flux
Answer» In physics, SPECIFICALLY electromagnetism, the magnetic flux (often denoted Φ or ΦB) through a surface is the surface integral of the normal COMPONENT of the magnetic field B passing through that surface. The SI UNIT of magnetic flux is the weber (WB) (in derived units: volt seconds), and the CGS unit is the maxwell.

Discussion

8.	the gravitational force between two object is f how will the force change when the distance between them is reduced to one fourth
Answer» We have formula for gravitational force ..... F=Gm1m2/r^2 as G ,m1,m2 are constant for given two objects. so F is inversely proportional to the square of DISTANCE between the objects. so F1/F2 =(R2)^2/(r1)^2 we are given r2=r1/4 or( r2)^2=(r1/)^2/16 or( r2)^2/(r1)^2=1/16 so F1/F2=1/16 => F2=16F1 so force will BECOME 16 times.

Discussion

9.	What is work done by a person
Answer» Hello, If you applied a constant FORCE over a floor that has friction on an object, would the WORK DONE by the person equal to the work done on the object? ASSUME that the floor is flat and that the object is being pushed to the right.

Discussion

10.	Minimum 3 numerical questions for class 8 of Chap :-force and pressure
Answer» Here is the 3 numerical QUESTIONS with the ANSWERS!! HOPE you LIKE them....

Discussion

11.	Of the following is a chemical property density solubility reaction with acid colour
Answer» ANSWER: REACTION with acid Explanation: HOPE this HELPS U...

11.

Of the following is a chemical property density solubility reaction with acid colour

Answer»

ANSWER:

REACTION with acid

Explanation:

HOPE this HELPS U...

Discussion

12.	What is the gravitational force between the earth and a body called
Answer» ACCELERATION DUE to GRAVITY its VALUE is 9.8N

Discussion

13.	what with what speed should a body be thrown upwards so that the distance transport in 5th second and 6th second are equal
Answer» I HOPE this HELPS ,if it does..MARK it BRAINLIEST

Discussion

14.	What is the momentum of a man of mass 75kg when he walks with a uniform velocity 2m/s
Answer» P=mv p=75*2 p=150 KG m/s

Discussion

15.	Two cars are moving with a velocity of 36 km hr and 54 km hr on a highway what is the ratio if the mass of car is 400 kg and 600 kg respectively
Answer» We can get their ratio by getting their RESPECTIVE kinetic ENERGIES. Kinetic energy = 0.5mv² V should be in meters PER second. Car A : V = 36 × 5/18 = 10m/s KE = 0.5 × 10² × 400 = 20000joules Car B: V= 54 × 5/18 = 15m/s KE = 0.5 × 15² × 600 = 67500 joules The ratio of A to B is 8 : 27

15.

Two cars are moving with a velocity of 36 km hr and 54 km hr on a highway what is the ratio if the mass of car is 400 kg and 600 kg respectively

Answer»

We can get their ratio by getting their RESPECTIVE kinetic ENERGIES.

Kinetic energy = 0.5mv²

V should be in meters PER second.

Car A :

V = 36 × 5/18 = 10m/s

KE = 0.5 × 10² × 400 = 20000joules

Car B:

V= 54 × 5/18 = 15m/s

KE = 0.5 × 15² × 600 = 67500 joules

The ratio of A to B is

8 : 27

Discussion

16.	A body lifts his bag from ground what force was applied on this
Answer» MUSCULAR FORCE was APPLIED on this.

Discussion

17.	Sweety moves along a circular track of radius 7 when starting from the point A find her displacement
Answer» DISPLACEMENT is ZERO as the INITIAL and the FINAL POSITIONS are same

Discussion

18.	a 1.5V battery is connected to a light globe of resistance 2.0W. How many electrons leave the battery in 1 minute
Answer» Heya mate Here is the ANSWER:-- V= 1.5V P= 2 W We know, P=VI so, I= P/V I= 2/1.5 I= 1.3 A And time,t = 1min = 60 sec So , I=ne/t (N= no. of electron and e=charge on 1 electron) Putting all values in the formula 1.3= n1.610^-16 / 60 n= 4.875*10^17 (n= number of electrons) ______________ Hope it helps✌✌ Thanks!!

Discussion

19.	Can u please answer this question
Answer» 1st Pressure = FORCE /AREA =20 /0.02=1000N 2nd P=F/A =20/0.05 =4000N 3rd P= 20/0.01 =2000N

Discussion

20.	Shruti moves along a circular track of radius 7m starting from the point A find displacement
Answer» The displacement will be 0 because STARTING from the point A and reaches again the same point A( i.e Circumference of the CIRCLE) as it moves ALONG the circular track. This may help U...

Discussion

21.	Molecules excert equal pressure in all direction on the walls of container is true or false
Answer» TRUE ........HOPE it will help u...please MARK as BRAINLIST

Discussion

22.	Is C6 H12O6 is aqueous
Answer» No it is not AQUEOUS it is SOLID in STATE and it is GLUCOSE

Discussion

23.	ANY INTELLINGENT HERE?? TELL MY QUESTION-ANSWER EXPLAIN WORKING IF AIR CONDITIONER
Answer» AIR conditioner is DEVICE which is used to MAINTAIN the temperature in the ROOM .It is used as a exhaust

Discussion

24.	state Newton's second law of motion and show that the first law of motion can be mathematically stated from the mathematical expression for the second law of motion
Answer» HEY BUDDY !!! HERE IS UR ANSWER!!! ______________________ ♤ Second law of Newton states that force applied on a BODY is equal is equal to change in momentum , i.e =》 F = d( P ) / DT ● We KNOW P = m.v ● Where , m is mass of body ; v id velocity =》 F = d( m.v ) / dt =》 F = m.d( v ) / dt // mass always constant ■ We know ( d( v ) / dt ) is equal to acceleration =》 F = m.a-----------( 1 ) ■ First law states that if no force is applies object , it doesn'tchange it's state . ■ Now in eqn ( 1 ) putting F = 0 ■ There fore acceleration will be 0 , which means object is in rest or have constant velocity.Hence it proves first law of motion. HOPE HELPED!! JAI HIND!! :-)

Discussion

25.	Please arrange the frictions in their increasing orders 1.static friction 2.sliding friction 3.rolling
Answer» Decreasing ORDER of frictional forces : Static friction >SLIDING Friction > Rolling friction •••••••••• EXPLAINATION: Frictional force are of three types : 1.static friction 2.Sliding friction 3.Rolling friction Static friction : Static friction comes into play when when ONE OBJECT is at rest with respect to other object. Irregularities will be more. Hence force required to overcome static friction is more. Sliding friction comes into play when one objects slides over the surface of other objects. Less time is given for the irregularities to interlock as object slides . Rolling friction comes into play when one object rolls over the surface of the other. Decreasing Order of frictional forces : Static friction >Sliding Friction > Rolling friction

Discussion

26.	Why less force is required to shut the door from edge of the door
Answer» Because with increase in MOMENT arm LESS force is required to SHUT the DOOR

Discussion

27.	Explain the law of conservation of momentum
Answer» The law of momentum conservation can be stated as follows. For a COLLISION occurring between OBJECT 1 and object 2 in an isolated system, the total momentum of the two OBJECTS before the collision is equal to the total momentum of the two objects after the collision.

Discussion

28.	Bullet leaves a rifle with a velocity of 100 M per second and the rifle of mass 2.5 kg recoils with a velocity of 1 M per second find the mass of the bullet
Answer» Mass of bullrt is 25 GRAM by law of conservation of LINEAR momentum

Discussion

29.	a body is projected vertically upward if T1 and t2 be the times at which it is at height H above the point of projection
Answer» a body is projected VERTICALLY UPWARDS from the ground.It is found at the same ELEVATION at t=3 and t=7s after PROJECTION.Find the projection speed. Answer. U=g÷2(t1+t2) =5×(3+7) =5×10 =50m/s. U=g÷2(t1+t2) =5×(3+7) =5×10 =50 Hope this helps you dear friend\

29.

a body is projected vertically upward if T1 and t2 be the times at which it is at height H above the point of projection

Answer»

a body is projected VERTICALLY UPWARDS from the ground.It is found at the same ELEVATION at t=3 and t=7s after PROJECTION.Find the projection speed.

Answer.

U=g÷2(t1+t2)

=5×(3+7)

=5×10

=50m/s.

U=g÷2(t1+t2)

=5×(3+7)

=5×10

=50

Hope this helps you dear friend\

Discussion

30.	On what factors magnetic field produce by a straight wire depends
Answer» 1) CURRENT passing through the CONDUCTOR.2) distance of the MAGNETIC compass from the conductor.

Discussion

31.	The measurement value of length of simple pendulum is 20 cm known with 2mm accuracy .the time for 50 oscillation was measured to be 40 swithin 1s resolution . calculate the percentage acciracy in the determination of acceleration die to gravity 'g' from above measurements.
Answer» It will resolve 1 RESOLUTION = 45 switches. So, if G = 9.8 m/s^2, then resolved all switches.

Discussion

32.	. An object placed 4cm in front of a converging lens produces a real image 12cm from the lens. What is the magnification of the image? What is the focal length of the lens? Also draw the ray diagram to show the formation of the image.
Answer» I HOPE it COULD HELP you

Discussion

33.	Two objects each of 1.5 kg moving in a straight line but in opposite direction. The velocity of each object is 2.5 m/s before collision during which they stick together. What will be the velocity of the combined object after collusion.Thanks for help in advance
Answer» VELOCITY before COLLISION and velocity after collision will be the same

Discussion

34.	Observing the variation of friction
Answer» OBSERVING the VARIATION of friction best identified on DIFFERENT surfaces.

Discussion

35.	A vehicle moves for 10 minutes at 20 m per second due north and stops for 5 minutes then at continuous due north at 40 m per second for 20 minutes average velocity in the entire journey is
Answer» AVERAGE VELOCITY of VEHICLE will be 28.5 m/s

Discussion

36.	force between two points charge kept at a distance d apart in air F. if these charges are kept at the same distance in water, how does the electric force between them change .
Answer» Plzz mark me brainliest Force between two POINT charges KEPT at a DISTANCE d a part in AIR is f. If these charges are kept at the some distance in WATER ,how does the electric force between them change.

Discussion

37.	Do you agree with the statement friction is both good and an evil explain with examples
Answer» Yes because FRICTION is harmful to US but ALSO USEFUL .... as friction make u write... but it can also... make u fall on a smooth surface...

Discussion

38.	Elastic Collision between two Objects
Answer» An elastic collision is an encounterbetween two bodies in which the TOTAL KINETIC ENERGY of the two bodies after the ENCOUNTER is EQUAL to their total kinetic energy before the encounter.

Discussion

39.	Find a if 3i-2j+4k and ai+2j-k are perpendicular to each other
Answer» HOPE this will HELP you

Discussion

40.	force between two points charge kept at a distance d apart in air F . if these charges are kept at the same distance in water,how does the electric force between them change.
Answer» Explanation: The dielectric CONSTANT of water is 80. Hence, the ELECTRIC FORCE when the RODS are inserted in water is F/80 where F is the force between the two charges in AIR.

40.

force between two points charge kept at a distance d apart in air F . if these charges are kept at the same distance in water,how does the electric force between them change.

Answer»

Explanation:

The dielectric CONSTANT of water is 80. Hence, the ELECTRIC FORCE when the RODS are inserted in water is F/80 where F is the force between the two charges in AIR.

Discussion

41.	Define scalar give two examples
Answer» In physics SCALER QUANTITY DESCRIBE by ONE ELEMENT

Discussion

42.	Define vector give two examples
Answer» Vector QUANTITY is a quantity in which they are DEFINED by both its magnitude and as WELL as its direction. Ex :- Displacement and Velocity

Discussion

43.	What is the position of virtual object in case of concave mirror
Answer» The POSITION is INVERTED

Discussion

44.	Abdul while driving to school computes the average speed for his trip to be 20km/h. On his return trip along the same route, there is less traffic and the average speed is 30km/h. What is the average speed for Abdul's trip?
Answer» His AVERAGE SPEED is 20 km PER hour

Discussion

45.	Can a body have a change of 0.8×10-19? justify your answer
Answer» No ACC. to the QUANTIZATION of charges the value of charge will always be more than 1.6 x 10-19 acc. to the formula q=ne ,where e is the charge carried by a PROTON or a electron and n are the integral multiples of the charge(n=1,2,3,4,5....) Hope it's help you Please MARK me in BRAIN list answer

Discussion

46.	A ball is thrown vertically upwards which of the following quantities remain constant speed kinetic energy velocity acceleration
Answer» Nothing will be CONSTANT EVERYTHING will keep changing please MARK as BRAINLIEST

Discussion

47.	a body is projected with an initial velocity 20 m per second at 60 degrees to the horizontal. It's initial velocity vector is,
Answer» Its INITIAL VELOCITY in the x-direction is 20cos60° =20/2=10m/s. initial velocity in y direction=20sin60°=20√3/2=10√3m/s. so velocity VECTOR is 10I^ +10√3j^.

Discussion

48.	A body of mass 5 kg is moving with a velocity of 10 m/s. A force is applied to it so that in 25 seconds, it attains a velocity of 35 m/s. Calculate the value of the force applied
Answer» F=ma given, m=5kg a=(u=10m/s v=35m/s t=25sec) =( v-u)/t=(35-10)/25 = 1 F=ma F=5×1=5N hope it HELPS you

Discussion

49.	Properties of magnetic field for a bar magnet
Answer» Properties Of MAGNETIC Field of Bar Magnet is :- 1). Each bar magnet’s direction goes from South to its North Pole. 2). If you cut it in half you will have to smaller magnets each with another South and North Pole. 3). The STRENGTH is RELATIVE to how large the magnet is and how close the two POLES are to each other.

49.

Properties of magnetic field for a bar magnet

Answer»

Properties Of MAGNETIC Field of Bar Magnet is :-

1). Each bar magnet’s direction goes from South to its North Pole.

2). If you cut it in half you will have to smaller magnets each with another South and North Pole.

3). The STRENGTH is RELATIVE to how large the magnet is and how close the two POLES are to each other.

Discussion

50.	Si unit of potential complete solution
Answer» Hey there ! The SI UNIT of ELECTRIC POTENTIAL DIFFERENCE is the (a)joule, ... The SI unit of electric potential difference is the (a) joule, (b) newton PER coulomb, (c) newton-meter, (d)joule per coulomb. Hope it helps you !

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

A man stands at the center of aturn table

How to identify given circuit contains parallel or series combination

How willthe equation of motionfor an objectmoving with uniform velocity change

Solve it !!!!Need a Good Explanation !!

What is the conclusion of friction

What is the fundamental unit of flux

the gravitational force between two object is f how will the force change when the distance between them is reduced to one fourth

What is work done by a person

Minimum 3 numerical questions for class 8 of Chap :-force and pressure

Of the following is a chemical property density solubility reaction with acid colour

What is the gravitational force between the earth and a body called

what with what speed should a body be thrown upwards so that the distance transport in 5th second and 6th second are equal

What is the momentum of a man of mass 75kg when he walks with a uniform velocity 2m/s

Two cars are moving with a velocity of 36 km hr and 54 km hr on a highway what is the ratio if the mass of car is 400 kg and 600 kg respectively

A body lifts his bag from ground what force was applied on this

Sweety moves along a circular track of radius 7 when starting from the point A find her displacement

a 1.5V battery is connected to a light globe of resistance 2.0W. How many electrons leave the battery in 1 minute

Can u please answer this question

Shruti moves along a circular track of radius 7m starting from the point A find displacement

Molecules excert equal pressure in all direction on the walls of container is true or false

Is C6 H12O6 is aqueous

ANY INTELLINGENT HERE?? TELL MY QUESTION-ANSWER EXPLAIN WORKING IF AIR CONDITIONER

state Newton's second law of motion and show that the first law of motion can be mathematically stated from the mathematical expression for the second law of motion

Please arrange the frictions in their increasing orders 1.static friction 2.sliding friction 3.rolling

Why less force is required to shut the door from edge of the door

Explain the law of conservation of momentum

Bullet leaves a rifle with a velocity of 100 M per second and the rifle of mass 2.5 kg recoils with a velocity of 1 M per second find the mass of the bullet

a body is projected vertically upward if T1 and t2 be the times at which it is at height H above the point of projection

On what factors magnetic field produce by a straight wire depends

The measurement value of length of simple pendulum is 20 cm known with 2mm accuracy .the time for 50 oscillation was measured to be 40 swithin 1s resolution . calculate the percentage acciracy in the determination of acceleration die to gravity 'g' from above measurements.

. An object placed 4cm in front of a converging lens produces a real image 12cm from the lens. What is the magnification of the image? What is the focal length of the lens? Also draw the ray diagram to show the formation of the image.

Two objects each of 1.5 kg moving in a straight line but in opposite direction. The velocity of each object is 2.5 m/s before collision during which they stick together. What will be the velocity of the combined object after collusion.Thanks for help in advance

Observing the variation of friction

A vehicle moves for 10 minutes at 20 m per second due north and stops for 5 minutes then at continuous due north at 40 m per second for 20 minutes average velocity in the entire journey is

force between two points charge kept at a distance d apart in air F. if these charges are kept at the same distance in water, how does the electric force between them change .

Do you agree with the statement friction is both good and an evil explain with examples

Elastic Collision between two Objects

Find a if 3i-2j+4k and ai+2j-k are perpendicular to each other

force between two points charge kept at a distance d apart in air F . if these charges are kept at the same distance in water,how does the electric force between them change.

Define scalar give two examples

Define vector give two examples

What is the position of virtual object in case of concave mirror

Abdul while driving to school computes the average speed for his trip to be 20km/h. On his return trip along the same route, there is less traffic and the average speed is 30km/h. What is the average speed for Abdul's trip?

Can a body have a change of 0.8×10-19? justify your answer

A ball is thrown vertically upwards which of the following quantities remain constant speed kinetic energy velocity acceleration

a body is projected with an initial velocity 20 m per second at 60 degrees to the horizontal. It's initial velocity vector is,

A body of mass 5 kg is moving with a velocity of 10 m/s. A force is applied to it so that in 25 seconds, it attains a velocity of 35 m/s. Calculate the value of the force applied

Properties of magnetic field for a bar magnet

Si unit of potential complete solution