First slide

Travelling wave

Question

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

Moderate

A

5 : 2
B

10: 4
C

2.5 : 1
D

25 : 4

Solution

$Energy density \propto {(amplitude)}^{2}$

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