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As a wave propagates...

As a wave propagates

A

the wave intensity remains constant for a plane wave

B

the wave intensity decreases with the inverse of the distance from the source for a speherical wave

C

The wave intensity decreases as the inverse of the square of the distance from the source for a spherical wave

D

the total energy of the spherical wave incident over any spherical surface centred at the source remains constant at all times.

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The correct Answer is:
A, C, D
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