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CGP EDU Academic Team
Published on: September 13, 2026
Young's double slit inteference apparatus is immersed in a liquid of refractive index 1.44. It
has slit separation of 1.5 mm. The slits are illuminated by a parallel beam of light whose wavelength in air is 690 nm. The fringe width on a screen placed behind the plane of slits at a distance of 0.72 m, will be:
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