Click on the Start button below to begin the “Physics Sample Practice and Mock Test for JEE Main and Advanced 2013″.

Note: No calculator is allowed during the quiz, and you may use a pencil and a piece of scratch paper. Try your best to answer all 10 questions in minimum time. The correct answers will be shown at the end of the quiz.

All questions are of objective type (multiple choice questions); each question with choice of four answers.

JEE Main_PHYSICS_9

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Question 1

A ball is released from the top of a tower of height h metres. It takes T seconds to reach the
ground. What is the position of the ball in T/3 seconds?

A

h/9 metres from the ground

B

7h/9 metres from the ground

C

8h/9 metres from the ground

D

17h/18 metres from the ground.

Question 2

Which of the following statements is false for a particle moving in a circle with a constant
angular speed?

A

The velocity vector is tangent to the circle

B

The acceleration vector is tangent to the circle

C

The acceleration vector points to the centre of the circle

D

The velocity and acceleration vectors are perpendicular to each other.

Question 3

An automobile travelling with speed of 60 km/h, can brake to stop within a distance of 20 cm.
If the car is going twice as fast, i.e 120 km/h, the stopping distance will be

A

20 m

B

40 m

C

60 m

D

80 m

Question 4

A machine gun fires a bullet of mass 40 g with a velocity 1200 ms−1. The man holding it can
exert a maximum force of 144 N on the gun. How many bullets can he fire per second at the
most?

A

1

B

2

C

4

D

3

Question 5

A uniform chain of length 2 m is kept on a table such that a length of 60 cm hangs freely
from the edge of the table. The total mass of the chain is 4 kg. What is the work done in
pulling the entire chain on the table?

A

7.2 J

B

3.6 J

C

120 J

D

1200 J

Question 6

A block rests on a rough inclined plane making an angle of 30° with the horizontal. The
coefficient of static friction between the block and the plane is 0.8. If the frictional force on
the block is 10 N, the mass of the block (in kg) is (take g = 10 m/s^2)

A

2

B

4

C

1.6

D

2.5

Question 7

A

-7

B

7

C

10

D

13

Question 8

A particle is acted upon by a force of constant magnitude which is always perpendicular to
the velocity of the particle, the motion of the particle takes place in a plane. It follows that

A

its velocity is constant

B

its acceleration is constant

C

its kinetic energy is constant

D

it moves in a straight line.

Question 9

A solid sphere is rotating in free space. If the radius of the sphere is increased keeping mass
same which one of the following will not be affected?

A

moment of inertia

B

angular momentum

C

angular velocity

D

rotational kinetic energy.

Question 10

One solid sphere A and another hollow sphere B are of same mass and same outer radii.
Their moment of inertia about their diameters are respectively IA and IB such that
Where dA and dB are their densities

A

IA = IB

B

IA > IB

C

IA < IB

D

IA/IB = dA/dB

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