A parallel beam of monochromatic light of wavelenght λ is used in a Young's double slit experiment. The slits are separated by a distance d and the screen is placed parallel to the plane of the slits. The incident beam makes an angle θ=sin−1(λ2d) with the normal to the plane of the slits. A transparent sheet of refractive index. ′μ′ and thickness t=λ2(μ−1) is introduced infront of one of the slit. Find the intensity at the geometrical centre.

A parallel beam of monochromatic light of wavelenght λ is used in a Y

1.	A parallel beam of monochromatic light of wavelenght λ is used in a Young's double slit experiment. The slits are separated by a distance d and the screen is placed parallel to the plane of the slits. The incident beam makes an angle θ=sin−1(λ2d) with the normal to the plane of the slits. A transparent sheet of refractive index. ′μ′ and thickness t=λ2(μ−1) is introduced infront of one of the slit. Find the intensity at the geometrical centre.
Answer» A parallel beam of monochromatic light of wavelenght $λ$ is used in a Young's double slit experiment. The slits are separated by a distance d and the screen is placed parallel to the plane of the slits. The incident beam makes an angle $θ = s i n^{- 1} (\frac{λ}{2 d})$ with the normal to the plane of the slits. A transparent sheet of refractive index. $^{'} μ^{'}$ and thickness $t = \frac{λ}{2 (μ - 1)}$ is introduced infront of one of the slit. Find the intensity at the geometrical centre.

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