Assertion: The impulse of a force can be zero even if force is not zero.

Question

Question given below consists of two statements, an assertion and reason. Select the number corresponding to the appropriate alternative as follows 

(A) If both assertion and reason are true and reason is the correct explanation of assertion 

(B) If both assertion and reason are true but reason is not the correct explanation of assertion 

(C) If assertion is true but reason is false 

(D) If assertion is false but reason is true.

Assertion: The impulse of a force can be zero even if force is not zero. 

Reason: The impulse of a force is equal to change in momentum of a body.

Answer 1

(D) If assertion is false but reason is true.

Assertion: If the force is non-constant and reverses itself over time, it can give a zero impulse. For example: spring force would give a zero impulse over one period of oscillation.

Answer 2

Correct answer is

(D) If assertion is false but reason is true.