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QUESTION
Light from a helium-neon laser (λ=633nm) passes through a circular aperture and is observed on a screen 4.90 m behind the aperture. the width of the central maximum is 2.40 cm . part a what is the di
Light from a helium-neon laser (λ=633nm) passes through a circular aperture and is observed on a screen 4.90 m behind the aperture. the width of the central maximum is 2.40 cm . part a what is the diameter (in mm) of the hole?
