SSC CGL 7 Sep 2016 Paper

Question : 33 of 100

Marks: +1, -0

Intensity of any wave is proportional to which of the following?

Amplitude
Square of amplitude
Square root of amplitude
Cube of amplitude

Solution:

The energy of a wave is proportional to the square of its amplitude. Therefore, the intensity of a wave is also proportional to the square of its amplitude. This means that if Intensity drops off at a rate of 1/

r^2

, wave amplitude drops off at a rate of 1/r.

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