Two sinusoidal plane waves of the same frequency having intensities I0 and 4I0 are travelling in the same direction. The resultant intensity at a point at which the waves meet with a phase difference of π2 is
A
2I0
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B
5I0
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C
9I0
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D
3I0
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Solution
The correct option is B5I0 We know that resultant intensity at a point is given by,