JEE PHYSICS MCQ: WAVE OPTICS

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Young’s double slit experiment is carried out by using green, red and blue light, one color at a time. The fringe widths recorded are

{\beta _G},{\beta _R}\;and\;{\beta _B}

, respectively. Then

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Correct option: D

{\beta _R} > {\beta _G} > {\beta _B}

Option D is correct. Fringe width is directly proportional to wavelength, and red light has the longest wavelength, followed by green, and then blue, resulting in the order

{\beta _R} > {\beta _G} > {\beta _B}

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