Question

When two sound waves with a phase difference of $\frac{\pi }{2}$, and each having amplitude A and frequency ω, are superimposed on each other, then the maximum amplitude and frequency of resultant wave is [MP PMT 1989]

• A.
• B.
• C.
• D.

Answer 1

The correct option is D

$A_{max}=\sqrt{A^2+A^2}=A\sqrt{2}$, frequency will remain same i.e. $\omega$.