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Q.

We made a pendulum by tying a stone to a string and wanted to reduce the time period. Its time period is $1$ second. How will we achieve this?

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a

by reducing the length of the string.

b

by increasing the length of the string.

c

By using a bigger stone

d

All of these

answer is A.

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Detailed Solution

We made a pendulum by tying a stone to a string and wanted to reduce the time period. Its time period is 1 second. We will achieve this by reducing the length of the string.
The time decreases because it takes longer to process a string the longer it gets. The time required decreases with the length of the string. So, the time period can be reduced by reducing the length of the string.

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