A) interference with bright band
B) interference with dark band
C) interference in which width of the fringe will be slightly increased
D) interference with dark bands
Correct Answer: C
Solution :
We know that the refractive,-index of air is slightly more than 1. When air is evacuated, refractive index decreases and hence, the wavelength increases and the fringe width also increases.You need to login to perform this action.
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