JEE PHYSICS MCQ: WAVE OPTICS

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In order to see diffraction the thickness of the film is

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Correct option: B

10000\;\mathop \mathrm{A}\limits^ \circ

Option B is correct because for diffraction to be observable, the size of the obstacle (film thickness) should be comparable to the wavelength of visible light, which is around

10000 \mathop \mathrm{A}\limits^ \circ

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