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in Physics by (80.9k points)

Interference was observed in interference chamber where air was present, now the chamber is evacuated, and if the same light is used, a careful observer will see 

(a) no interference 

(b) interference with brighter bands 

(c) interference with dark bands 

(d) interference with larger width

1 Answer

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Best answer

Correct option  (d) interference with larger width

Explanation:

In vacuum, λ increases very slightly compared to that in air. As β ∝ λ, therefore, width of interference fringe increases slightly.

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