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Interference was observed in interference ­chamber where air was present, now the chamber is evacuated, and if the same light is used, careful observer will see (a) No interference (b) Interference with brighter bands (c) Interference with dark bands (d) Interference fringe with larger width



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


(a)    No interference


(b)    Interference with brighter bands


(c)    Interference with dark bands


(d)    Interference fringe with larger width


Grade:10

1 Answers

Navjyot Kalra
askIITians Faculty 654 Points
7 years ago

(d)

In vaccum, l increases very slightly compared to that in air. As ß is proportional to wavelength, therefore, width of interference fringe increases slightly.

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