Interference is observed in a chamber with air present inside the chamber.The chamber is then evacuated and the same light is again used to produce interference. A careful observer will see

Interference is observed in a chamber with air present inside the cham

1.	Interference is observed in a chamber with air present inside the chamber.The chamber is then evacuated and the same light is again used to produce interference. A careful observer will see
Answer» no change in the pattern that the fringe WIDTH SLIGHTLY increases that the fringe width slightly decreases no interference pattern. Solution :The refractive INDEX of air is slightly more than unity. Therefore, when the chamber is evacuated, the refractive index decreases and hence the wavelength increases.This RESULTS in a slight increase in the fringe width.

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Interference is observed in a chamber with air present inside the chamber.The chamber is then evacuated and the same light is again used to produce interference. A careful observer will see

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