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Question

The time period of a simple pendulum can be changed by changing:

A
Mass of the bob
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B
Length of the string
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C
Quality of the thread/string
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D
Density of the bob
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Solution

The correct option is B Length of the string
The time period of a simple pendulum depends on the length of the pendulum and the gravity of the planet. So, in order to change the time period of a simple pendulum, its length needs to be changed. The mass and density of the bob or the quality of the string/thread does not play the role of defining the time period of a simple pendulum.

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