Light from a helium-neon laser wavelength649 nm passes
Light from a helium-neon laser (wavelength=649 nm) passes through a circular aperture and is observed on a screen 2.36 m behind the aperture. The width of the central maximum is 3.03 cm. What is the diameter (in mm) of the hole?
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Light from a helium-neon laser (wavelength=649 nm) passes through a circular aperture and is observed on a screen 2.36 m behind the aperture
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