Question

Assertion (A): In the uniform circular motion, the body is acted upon by a centripetal force, normal to displacement.

Reason (R): In the uniform circular motion, work done by the body is zero.

Options

• Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion.

• Both Assertion (A) and Reason (R) are true but Reason (R) is not the correction explanation of Assertion.

• Assertion (A) is false, but Reason (R) is true.

• Assertion (A) is true, but Reason (R) is false.

Answer 1

Both Assertion (A) and Reason (R) are true but Reason (R) is not the correction explanation of Assertion.

Explanation:

The assertion is true because in uniform circular motion, the centripetal force always points toward the center, making it perpendicular to the body's tangential displacement. The reason is also true because the work done by this force is zero (cos 90° = 0). However, the reason is a mathematical consequence of the assertion, not the cause of it.