Jayasree Asked a Question
February 8, 2022 6:00 pmpts 30 pts
Q25. When laser light of wavelength 2 falls on a metal Scale with 1 mm engravings at a grazing angle of incidence, it is diffracted to form a vertical chain of diffraction spots on a screen kept perpendicular to the scale. If the wavelength of the laser is increased by 200 nm, the angle of the first-order diffraction spot changes from 5 to (a) 6.60 (b) 5.140 (c) 5.018 (d) 5.210 Ans
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  • Jayasree
    I am unable to understand this problem can you explain
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  • Akash Best Answer
    option c
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