MHT CET 2025 Physics question
In Young's double slit experiment, when light of wavelength 600 nm is used, 18 fringes are observed on the screen. If the wavelength of light is changed to 400 nm, the number of fringes observed on the screen is
Answer: (D)
Solution
In a fixed segment of the screen the number of fringes with fringe width , so . Therefore and . The exact value 27 is not
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