Question

Assertion : The magnitude of the displacement for a course of motion may be zero.
Reason : The path length for the corresponding course of motion is zero.

• 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 both assertion and reason are false

Answer 1

Answer: (C)

The magnitude of the displacement for a course of motion maybe zero but the corresponding path length is non-zero. For example, if a car starts from a point $O$ , goes to a point $P$ and then returns to $O$ . The final position coincides with the initial position and the displacement is zero. The path length of this journey is $OP+OP=2OP$ .