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JEE Main Physics Class 12 Wave Optics Part 1 Questions

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Question : 22

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In a Young’s double slit experiment 15 fringes are observed on a small portion of the screen when light of wavelength 500 nm is used. Ten fringes are observed on the same section of the screen when another light source of wavelength λ is used. Then the value of λ is (in nm) ______.

[NA 9 Jan 2020 II]

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