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18. A thin film of index of refraction Nilm is on a piece of glass of index refraction nglass. Assume initially that ngl
Posted: Mon Jul 18, 2022 6:01 am
by answerhappygod
- 18 A Thin Film Of Index Of Refraction Nilm Is On A Piece Of Glass Of Index Refraction Nglass Assume Initially That Ngl 1 (272.74 KiB) Viewed 38 times
18. A thin film of index of refraction Nilm is on a piece of glass of index refraction nglass. Assume initially that nglass > Nilm > 1. Due to irregularities in the thickness of the of the film, monochromatic light reflecting off the film and glass produces an interference pattern of bright and dark regions. Now, suppose that the index of refraction of the glass is decreased so that nolm > nglass > 1. What happens to the interference pattern, if everything else is unchanged? (A) The bright and dark regions expand in size. (B) The bright and dark regions shrink in size. (C) The dark and bright regions change places. (D) There is no change in the interference pattern.