Question

Assertion (A): A pendulum clock shows correct time at $0^{\circ }$C, at a higher temperature the clock loses time
Reason (R): The period of oscillation increases due to increase in length so the clock loses time since it makes less number of oscillation in a day.

• A. Both A and R are true and R is the correct explanation of A
• B. Both A and R are true and R is not the correct explanation of A
• C. A is true and R is false
• D. A is false and R is true

Answer 1

The correct option is A Both A and R are true and R is the correct explanation of A

At higher temperature length increases.
$T=2\pi \sqrt{\frac{l}{g}}$
Thus even time period increases and thus it loses time.