set 3 MCQ Questions & Answers Detailed Explanation

Question : 1

Thomas and Mary are playing carom board. They arrange the seeds in the vertical order. Thomas strikes on the seeds with the striker, with a great speed. He finds that, the stakes do not fall down. On the other hand, when he strikes the seeds with less speed, all the seeds of the stakes fell down. Which property of force this shows?

a) Inertia

b) Motion

c) Newton’s third law

d) Reaction of force

Question : 2

When a moving bus suddenly applies brakes, the passengers sitting in it fall in the forward direction. This can be explained by

a) Newton’s second law

b) Newton’s first law

c) the theory of relativity

d) Newton’s third law

Question : 3

Newton’s laws of motion do not hold good for objects

a) moving with high velocity

b) moving slowly

c) at rest

d) moving with velocity comparable to velocity of light

Question : 4

If the number representing volume and surface area of a cube are equal, then the length of the edge of the cube in terms of the unit of measurement will be

a) 5

b) 4

c) 3

d) 6

Question : 5

On the basis of following features identify the correct option. A. It is measured in units of kg m/s. B. Its direction is same as that of velocity of body.

a) Both A and B

b) Inertia

c) Momentum

d) Neither A and B

Question : 6

A ball is dropped from a satellite revolving round the earth at a height of 120 km. The ball will

a) fall down to earth gradually

b) continue to move with the same speed along the original orbit of satellite.

c) continue to move with same speed along a straight line tangentially to the satellite at that time.

d) go far away in space