Question

Two sinusoidal plane waves of same frequency having
intensities I₀ and 4 I₀ are travelling in the same direction.
The resultant intensity at a point at which waves meet with
a phase difference of zero radian is
(a) I₀ (b) 5 I₀
(c) 9 I₀ (d) 3 I₀

Answer 1

Answer:

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Explanation:

option d