Engineering Physics I Mock Test 2

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Question 1 of 10

1. A spherical ball of mass 20kg is stationary at the top of a hill of height 100m. It rolls down a smooth surface to the ground, then climbs up another hill of height 30m and finally rolls done to a horizontal base at a height of 20m above the ground. The velocity attained by the ball is ___________

10√30m/s

20m/s

10m/s

40m/s

Question 1 of 10

Question 2 of 10

2. Which of the following is an example for a force which does work on a body but fails to change its kinetic energy?

A body pulled through a vertical surface

A body pulled through a plain surface

A body pulled through a horizontal surface

A body at rest

Question 2 of 10

Question 3 of 10

3. If the earth stops rotating, the value of g at the equator ___________

First increases and then decreases

Increases

No effect

Decreases

Question 3 of 10

Question 4 of 10

4. Which of the following is not a conservative force?

Gravitational force

Force of friction

Elastic force

Electrostatic force

Question 4 of 10

Question 5 of 10

5. A body can have momentum without energy.

True

False

Question 5 of 10

Question 6 of 10

6. The water at the foot of the fall will be at a different temperature from that at the top.

True

False

Question 6 of 10

Question 7 of 10

7. A body of mass 2kg is placed on a rough horizontal plane. The coefficient of friction between body and the plane is 0.2. Then ___________

Body will move in backward direction with acceleration of 0.5m/s², if force F=3N

Body will move in forward direction if F=3N

If F=3N, then body will be in rest condition

The body will move both in forward during a particular period and then remain at rest

Question 7 of 10

Question 8 of 10

8. A block has been placed on an inclined plane with the slope angle θ, block slides down the plant at a constant speed. The coefficient of kinetic energy is equal to ____________

cosθ

tanθ

sinθ

Question 8 of 10

Question 9 of 10

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?

Rotational kinetic energy

Angular momentum

Angular velocity

Moment of inertia

Question 9 of 10

Question 10 of 10

10. If gravitational constant is decreasing with time, what will remain unchanged in case of a satellite orbiting around the earth?

Orbiting radius

Areal velocity

Angular velocity

Time period

Question 10 of 10