Question

If two waves, each of intensity UP having the same frequency but differing by a constant phase angle of 60°, superpose at a certain point in space then the intensity of resultant wave is?

Answer 1

Given that,

Phase angle = 60°

If two waves, each of intensity having the same frequency.

We need to calculate the intensity of resultant wave

Using  formula of intensity

Here,

Where, I = intensity of wave

Put the value into the formula

Hence, the intensity of resultant wave is 3I

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