In Young's double-slit experiment, 12 fringes are obtained to be formed in a certain segment of the screen when the light of wavelength 600 nm is used. If the wavelength of light is changed to 400 nm, the number of fringes observed in the same segment of the screen is given by

Question

In Young's double-slit experiment, 12 fringes are obtained to be formed in a certain segment of the screen when the light of wavelength 600 nm is used. If the wavelength of light is changed to 400 nm, the number of fringes observed in the same segment of the screen is given by, 18, 24, 30, 36

MARKS App · Accepted Answer

In case of overlapping of fringes. n β = c o n s t e n t n 1 λ 1 = n 2 λ 2 ∴ n 2 = n 1 λ 1 λ 2 = 12 × 600 400 = 18

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