A coherent parallel beam of light of wavelength 5000 Å is incident normally on the plane of slits. The slit S₁ is covered with a slab of refractive index μₛ = 1.5 and thickness t = 4×10⁻⁵m as shown. T

Question

A coherent parallel beam of light of wavelength 5000 Å is incident normally on the plane of slits. The slit S₁ is covered with a slab of refractive index μₛ = 1.5 and thickness t = 4×10⁻⁵m as shown. The separation between the slits is d = 1 mm and the separation between the plane of slits and screen is D = 1m. Then the position of the central maxima formed on the screen is

Prashant Kotian · Accepted Answer

Correct answer: B. 55. A

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