Question

Assertion : The time‐period of pendulum, on a satellite orbiting the earth is infinity.
Reason : Time‐period of a pendulum is inversely proportional to $\sqrt{g}$.

• A. If both the assertion and reason are true and reason is a correct explanation of the assertion
• B. If both assertion and reason are true but assertion is not a correct explanation of the assertion
• C. If the assertion is true but the reason is false
• D. If both assertion and reason are false

Answer 1

Answer: (A)

Time period of simple pendulum, $T=2\pi\sqrt{\frac{l}{g}}$
Thus time-period is inversely proportional to $\sqrt{g}$ (where $g$ is acceleration due to gravity). And as the value of $g$ on a satellite is zero, therefore time-period of pendulum is infinity.