Light from a he-ne laser of wavelength 633 nm passes
Light from a He-Ne laser of wavelength 633 nm passes through a circular aperture. It is observed on a screen 4.0 m behind the aperture. The width of the central maximum is 5.4 cm. What is the diameter of the hole?
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light from a he-ne laser of wavelength 633 nm passes through a circular aperture it is observed on a screen 40 m behind
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