What will be the effect on the fringes formed in Young’s double-slit experiment if the apparatus is immersed in water?(a) Increases(b) Decreases(c) Remains the same(d) IndependentThis question was addressed to me in an online quiz.I'm obligated to ask this question of Wave Optics in division Wave Optics of Physics – Class 12

What will be the effect on the fringes formed in Young’s double-slit

1.	What will be the effect on the fringes formed in Young’s double-slit experiment if the apparatus is immersed in water?(a) Increases(b) Decreases(c) Remains the same(d) IndependentThis question was addressed to me in an online quiz.I'm obligated to ask this question of Wave Optics in division Wave Optics of Physics – Class 12
Answer» CORRECT answer is (b) Decreases The best I can explain: The wavelength of light in water (λ’ = \(\frac {\lambda }{\mu }\)) is LESS than that in air. When the APPARATUS is immersed in water, the fringe width decreases. This is the IMPACT experienced by the apparatus when immersed in water.

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