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A simple pendilum is swinging in a verti...

A simple pendilum is swinging in a vertical plane. The ratio of its potential energies when it is making angles `30^(@) and 60^(@)` with the vertical is,

A

`1:(2-sqrt(3))`

B

`(2-sqrt(3)):1`

C

`1:2`

D

`2:1`

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The correct Answer is:
B
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