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In the Young’s double slit experiment, a point P on the central bright fringe

In the Young’s double slit experiment, a point P on the central bright fringe is such that intensity of point P is 1/4 times the maximum intensity, distance between the slits is d and wavelength λ. Then angular separation of point P is

Options

(a) sin⁻¹ ( λ / d )
(b) sin⁻¹ ( λ / 2d )
(c) sin⁻¹ ( λ / 3d )
(d) sin⁻¹ ( λ / 4d )

Correct Answer:

sin⁻¹ ( λ / 3d )

Explanation:

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