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NEET 2017 Physics question

PhysicsWave OpticsNEET 2017

Young's double slit experiment is first performed in air and then in a medium other than air. It is found that bright fringe in the medium lies where dark fringe lies in air. The refractive index of the medium is nearly

Answer: (4)

Solution

In air, the position of the th dark fringe is , so for : . In the medium the wavelength becomes , so the th

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Question ID VK-092028