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MHT CET Physics question

PhysicsWave OpticsMHT CET

On placing a thin film of mica of thickness cm in the path of one of the interfering waves in Young's double slit experiment using monochromatic light, the fringe pattern shifts through a distance equal to width of a bright fringe. If wavelength used is cm, the refractive index of mica is [MHT-CET 2020]

Answer: (B)

Solution

Shift , so and

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Question ID VK-077559