MHT CET 2024 Physics question
Two sound waves each of wavelength '' and having the same amplitude 'A' from two '' and '' interference at a point P. if the path difference then the amplitude of resultant wave at point 'P' will be
Answer: (A)
Solution
The phase difference corresponding to a path difference is . The resultant amplitude of two waves of equal amplitude is \sqrt{A^2 + A^2 + 2A^2\cosφ}\sqrt{2 + 2\cos120°}$ =
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