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question mark

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

Hrishant Goswami , 12 Years ago
Grade 10
anser 1 Answers
Navjyot Kalra

(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.

Last Activity: 12 Years ago
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