MDCAT Preparatory Questions From Chapter 3 Motion

Restoring force in SHM is

A conservative        

B. non-conservative

C. frictional              

D. centripetal

Restoring Force is a conservative force so the answer is option A.

An organ pipe, open at both ends and another organ pipe, closed at one end, will resonate with each other, if their lengths are in ratio of 

A. 1:1   B. 1:4   C. 2:1    D. 1:2

the frequency of both pipes are equal so the answer is option C.

 A cyclist moves along a circular path of radius 70m. If he completes one round in 11s, calculate the total length of a path. 

A. 40 m

B. 440 m

C. 0 m

D. 11 m

The answer is 40 m.

A body is projected horizontally from the top of a cliff with a velocity of 9.8m/s. What time elapses before horizontal and vertical velocities become equal? Take g = 9.8m/s²

A. 9.8 s

B. 0 s

C. 10 s

D. 1 s

The answer is option D.

Two bullets are fired simultaneously, horizontally and with different speeds from the same place. Which bullet will hit the ground first?

A. The faster one

C. The slower one

B. Depends on their mass

D. Both will reach simultaneously

The answer is option D.

A body is moving along a straight path. What will happen to the body in the absence of an external field?

A. It will stop

B. It will move with the same speed in a different path

C. It will move with the same speed along the same straight path

D. It will move with a reduced speed along the same path

The answer is option C.

A person is standing in a bus. When the bus starts moving forward suddenly

A. The person moves forward

B. The person remains stationary

C. The person is unaffected

D. The person moves backward

The answer is option D.

A ship of mass 3×10^7 kg initially at rest is pulled by a force of 5×10^4 N through a distance of 3m. Assuming that the resistance due to water is negligible, the speed of the ship is?

A. 1.5m/s

B. 60m/s

C. 0.1m/s 

D. 5m/s 

The answer is option C.

Which of the following is an example of inelastic collision?

A. Collision between two vehicles

B. Collision between glass balls

C. A bullet fired into a wooden block 

D. Collision between two railway compartments

The answer is option A.

Mud thrown on a wall and sticking to it is an example for 

A. Inelastic collision

B. Elastic collision

C. Super elastic collision

D. Perfectly inelastic collision

The answer is option A.

A Body moves 6 m north. 8 m east and 10m vertically upwards, what is its resultant displacement from initial position

A. 10√2m

B. 10/√2m

C. 10 m

D. 10x2m

The answer is option A.