Question

Assertion: Work done by stretching or compressing a spring is positive.

Reason: Work done is said to be positive when force applied and displacement are in the same direction.

• A. Both assertion and reason are true and the reason is not the correct explanation of the assertion.
• B. Both assertion and reason are true and the reason is the correct explanation of the assertion.
• C. Both assertion and reason are false statements.
• D. Assertion is a true statement but the reason is false.

Answer 1

The correct option is B Both assertion and reason are true and the reason is the correct explanation of the assertion.

If both force and displacement are in the same direction, work done is said to be positive. Whereas, work done is negative if the force and displacement are in opposite directions.

The direction of force applied and displacement is the same while stretching or compressing the spring. Hence, the work done by stretching or compressing a spring is positive