This question was previously asked in

ACC 121 CGAT Paper (Held in Aug 2019)

Option 1 : length

The correct answer is __ length__.

__Key Points__

**Simple Pendulum:**- An ideal simple pendulum consists of a heavy point mass body (bob) suspended by a weightless, inextensible, and perfectly flexible string from rigid support about which it is free to oscillate.
- For a simple pendulum, the time period of swing of a pendulum depends on the length of the string and acceleration due to gravity.
**The period of oscillation of a simple pendulum depends on the effective length. Hence, Option 1 is correct.****The time period of a simple pendulum is independent of the mass of the bob.**- The time period of a simple pendulum is independent of the volume of the bob.
- The time period of a simple pendulum is independent of the amplitude of its oscillation
**The time period of a simple pendulum is directly proportional to the square root of the effective length of a pendulum.**- The time period of a simple pendulum is inversely proportional to the square root of acceleration due to gravity.