10.4 In a Young's double-slit experiment, the slits are separated by 0.28 mm and the screen is placed 1.4 m away. The distance between the central bright fringe and the fourth bright fringe is measured to be 1.2 cm. Determine the wavelength of light used in the experiment.

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Payal Gupta | Contributor-Level 10

8 months ago

10.4 Distance between the slits, d = 0.28 mm = 0.28 $* 10^{- 3}$ m

Distance between the slits and the screen, D = 1.4 m

Distance between the central bright fringe and the fourth ( n = 4) fringe, u = 1.2 cm = 1.2 $* 10^{- 2}$ m

In case of a constructive interference, we have the relation for the distance between two fringes as

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Physics Ncert Solutions Class 12th 2023

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