Two coherent narrow slits emitting sound of wavelength λ, in the same phase are placed parallel to each other at a small separation of 2λ. The sound is detected by moving a detector on the screen which is placed at a distance d from the slit S1 as shown in figure. Find the distance y such that the intensity at P is equal to intensity at point O if d>>λ.

Two coherent narrow slits emitting sound of wavelength λ, in the same

1.	Two coherent narrow slits emitting sound of wavelength λ, in the same phase are placed parallel to each other at a small separation of 2λ. The sound is detected by moving a detector on the screen which is placed at a distance d from the slit S1 as shown in figure. Find the distance y such that the intensity at P is equal to intensity at point O if d>>λ.
Answer» Two coherent narrow slits emitting sound of wavelength $λ$ , in the same phase are placed parallel to each other at a small separation of $2 λ$ . The sound is detected by moving a detector on the screen which is placed at a distance $d$ from the slit $S_{1}$ as shown in figure. Find the distance $y$ such that the intensity at $P$ is equal to intensity at point $O$ if $d >> λ$ .

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