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NEET UG PHYSICS MCQ: WAVE OPTICS
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Two glass plates are touching at one end and separated by a thin wire at the other end. When a monochromatic parallel beam of wavelength incident normally on the glass plates is reflected, an interference pattern of 30 fringes are observed. If the wavelength of light used is taken instead of , the number of fringes observed will be:
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Correct option: A
18
Option A (18) is correct because the number of fringes is inversely proportional to the wavelength of light used.
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