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20-12-2022
Physics

Answered

1.A collimated beam of light from a helium-neon laser of λ=633nm falls normally distanced from the center of the diffraction pattern to the first minimum and tithe onaslit0.5mmwide.Alens of 50cm focal length placed just behind the slit focuses the diffracted light onscreen located at the focal distance.Calculate the first secondary maximum.

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