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16-11-2020
Physics

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A double slit is illuminated simultaneously with orange light of wavelength 600 nm and light of an unknown wavelength. The m=4 bright fringe of the unknown wavelength overlaps with the m=3 fringe of the orange light. What is the unknown w

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17-11-2020

Answer:

Explanation:

distance of 4 th bright fringe of unknown light = distance of 3 rd bright fringe of orange light . Let λ be wavelength of unknown light .

4 λ D / d = 3 x 600 x D / d

4 λ = 3 x 600

λ = 450 nm .

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