Question

When a simple pendulum is moved from the Earth's surface to deep mine, the period of oscillation

• A. remains the same
• B. decreases
• C. increases
• D. becomes zero

Answer 1

Answer: (C)

increases

Answer 2

As we move from Earth's surface to deep mine, the acceleration due to gravity decreases and hence the time period of oscillation of a simple pendulum increases
Since, $T =2\pi \sqrt{\frac{l}{g}}$
$\therefore$ As $g$ decreases, $T$ increases