Identify correct statement among the following

Physics Simple Harmonic Motion (Oscillations) Simple Pendulum Single Correct MCQ

Published on: September 12, 2026

The greater the mass of a pendulum bob, the shorter is its frequency of oscillation

A simple pendulum with a bob of mass M swings with an angular amplitude of $40^\circ$ . When its angular amplitude is $20^\circ$ , the tension in the string is less than $Mg \cos 20°$

As the length of a simple pendulum is increased, the maximum velocity of its bob during its oscillation will also decreases

The fractional change in the time period of a pendulum on changing the temperature is independent of the length of the pendulum

Text Solution

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The correct answer is:

$T = 2 \pi \sqrt{\frac{l}{g}}$

$\frac{\Delta T}{T} = \frac{1 \Delta l}{2 l} = \frac{1}{2} a \cdot \Delta t$

So, the fractional change in the time period of a pendulum on changing the temperature is independent of length of pendulum.

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