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Vijay Dalakoti Asked a Question January 29, 2022 12:53 pm
30 pts Monochromatic light of wavelength 589.3 nm is incident normally on a thin wedge-shaped film of transparent plastic of refractive index 1.42. Interference fringes are observed in the reflected light with a separation of 0.26 mm between adjacent bright bands The angle of the wedge will be apprOximately (upto three decimal places) Solution For bright fringe 2ut (2n-1) 2ux, 2ux, tan 6 (2n-1)- For (n+1) bright fringe 2ux tan = (2n+1) tan 6 So. 2u, ) tan 6 = 2 1.42x0.26 10 tan 9 589.5x10m tan 7.98 10 9 0.045726
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