Work Energy And Power Question 14
Question: Assertion : When the force retards the motion of a body, the work done is zero. Reason : Work done depends on angle between force and displacement.
Options:
A) If both assertion and reason are true and the reason is the correct explanation of the assertion.
B) If both assertion and reason are true but reason is not the correct explanation of the assertion.
C) If assertion is true but reason is false.
D) If the assertion and reason both are false.
E) If assertion is false but reason is true.
Show Answer
Answer:
Correct Answer: E
Solution:
When the force retards the motion, the work done is negative.
Work done depends on the angle between force and displacement $ W=Fs\cos \theta $
