Waves Test - 3...

The fundamental frequency of a closed organ pipe is 660 Hz. If the second overtone frequency of an open organ pipe is equal to the first overtone frequency of the closed organ pipe, then what is the length of the open organ pipe? (Speed of sound in air = 330 m/s)

When there is superposition of the two waves of nearly equal frequencies, then beat frequency is defined as

In the following question, a statement of assertion followed by a statement of reason is given. Read both the statements carefully and choose the correct option.

Assertion: Amplitude of a cylindrical progressive wave is a/ √r.

Reason: The energy per unit area of the wave decreases as r increases.