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Mechanical Properties Of Fluids

Question
CBSEENPH11018861

Two waves of intensity I1 and I2superpose in phase. What is the intensity of resultant wave?

Solution

Resultant Intensity of the waves which are in phase is given by, 
I = straight I subscript 1 plus straight I subscript 2 plus 2 square root of straight I subscript 1 straight I subscript 2 end root