There is a destructive interference between the two waves of wavelength $λ$ 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

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Solution

The correct option is B
With path difference $\frac{λ}{2},$ waves are out of phase at the point of observation. For constructive interference path difference shold be n $λ$ .

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There is a destructive interference between the two waves of wavelength λ 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

The correct option is B With path difference λ2, waves are out of phase at the point of observation. For constructive interference path difference shold be n λ .

There is a destructive interference between the two waves of wavelength $λ$ 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

The correct option is B
With path difference $\frac{λ}{2},$ waves are out of phase at the point of observation. For constructive interference path difference shold be n $λ$ .