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In Young’s double silt experiment, 12 fringes are observed to be formed

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

Options

(a) 12
(b) 18
(c) 24
(d) 30

Correct Answer:

18

Explanation:

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