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प्रश्न
Why is the fringe pattern narrower with a blue colour filter?
विकल्प
Blue light has a longer wavelength
The slit width is narrowed
Blue light has a shorter wavelength
The slit is not parallel to the filament
MCQ
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उत्तर
Blue light has a shorter wavelength, giving a narrower fringe pattern. This contrasts with the wider pattern observed through a red colour filter.
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