There is a destructive interference between the two waves of wavelength `lambda` coming from two different paths at a point. To get maximum sound or constructive interference at that point, the path of one wave is to be increased by

Options

A. `(lamda)/(2)`
B. `lamda`
C. `(lamda)/(4)`
D. `(3 lamda)/(4)`

Answer

A

Explanation

For destructive interference, the path different between the waves is `(lamda)/(2), (3lamda)/(2)`,…. For producing constructive interference, the path of one of the wave should be increased by `(lamda)/(2)` so that the path difference will be `lamda`