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The amplitude of two waves are in ratio ...

The amplitude of two waves are in ratio 5 : 2. If all other conditions for the two waves are same, then what is the ratio of their energy densities

A

`5 : 2`

B

`10 : 4`

C

`2.5 : 1`

D

`25 : 4`

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The correct Answer is:
D
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