set 1 MCQ Questions & Answers Detailed Explanation

Question : 1

Statement A:
Pulling a lawn roller is easier than pushing it.
Statement B :
Pushing increases the apparent weight and hence the force of friction.

a) Both statements are correct.

b) Statement B is correct.

c) Statement A is correct.

d) Both statements are incorrect.

Question : 2

If an object having mass of 1 kg is subjected to a force of 1 N it moves with

a) an acceleration of 10 m/s²

b) a speed of 1 km/s

c) a speed of 1 m/s

d) an acceleration of 1 m/s²

Question : 3

Two bodies A and B have masses M and m respectively where M > m and they are at a distance d apart. Equal force is applied to them so that they approach each other. The position where they hit each other is

a) at equal distance from A and B

b) nearer to A

c) nearer to B

d) cannot be determined

Question : 4

Frictional force

a) may act in the direction of motion

b) always acts in the direction of motion

c) always acts opposite to the direction of motion

d) always acts perpendicular to the direction of motion

Question : 5

For inelastic collision between two spherical rigid bodies

a) the linear momentum is not conserved

b) the total mechanical energy is not conserved

c) the total kinetic energy is conserved

d) the linear momentum is conserved

Question : 6

A person swims in a river aiming to reach exactly on the opposite point on the bank of a river. His speed of swimming is 0.5 m/s at an angle of 120º with the direction of flow of water. The speed of water is

a) 0.25 m/s

b) 0.5 m/s

c) 1.0 m/s

d) 0.43 m/s