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Paragraph : A scientist was asked to fin...

Paragraph : A scientist was asked to find the height of the roof of a dome shaped hall. He took a spherical ball of radius 20 cm which he suspend with the string from the roof of dome. The height of the ball above the ground was 5 cm when suspended. He noted the time of 20 oscillations to be 100 s.
The time period of the pendulum when suspended from roof is :

A

5 s

B

10 s

C

20 s

D

100 s.

Text Solution

Verified by Experts

The correct Answer is:
A
`T=(100)/(20)=5" s"`
So correct choice is (a).
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