AIIMS 2019 Physics Mechanics Revision Quiz 1 for NEET & AIIMS Exams

Question 1

A block having mass m collides with an another stationary block having mass 2 m. The lighter block comes to rest after collision. If the velocity of first block is v, then the value of coefficient of restitution will must be

Question 2

Direction: In each of the following questions, a Statement of assertion is given followed by a corresponding Statement of reason.

Assertion (A) Linear momentum of a body changes even when it is moving uniformly in a circle.
Reason(R) In uniform circular motion velocity remains constant.

Question 3

Direction: In each of the following questions, a Statement of assertion is given followed by a corresponding Statement of reason.

Assertion (A) Soldiers are asked to break steps while crossing the bridge.
Reason (R) The frequency of matching may be equal to the natural frequency of bridge and may lead to resonance which can break the bridge.

Question 4

Direction: In each of the following questions a statement of Assertion is given followed by a corresponding statement of Reason just below it. Of the statements mark the correct answer as:

Assertion: In a stationary wave, there is no transfer of energy.
Reason: There is no outward motion of the disturbance from one particle to adjoining particle in a stationary wave.

Question 5

A weight w is suspended from the midpoint of a rope, whose ends are at the same level. In other to make the rope perfectly horizontal, the force applied to each of its ends must be

Question 6

The motor of an engine is rotating about its axis with an angular velocity of 120 rpm. It comes to rest in 10 s, after being switched off. Assuming constant deceleration, calculate the number of revolutions made by it before coming to rest.

Question 7

What is the charge to mass ratio if two identical body of equal charge and mass are brought very slowly at a distance ‘r’ and the external work done in this process is zero?

Question 8

An observer moves towards a stationary source of sound with a speed 1/5^th of the speed of sound. The wavelength and frequency of the source emitted are

and f respectively. The apparent frequency and wavelength recorded by the observer are respectively: