JEE Main 2022 Physics question
In a double slit experiment with monochromatic light, fringes are obtained on a screen placed at some distance from the plane of slits. If the screen is moved by m towards the slits, the change in fringe width is cm. If the distance between the slits is 1 mm, then the wavelength of the light will be nm.
Answer: 600
Solution
The fringe width is , so . Then 10^{-5}$ m = (λ
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