Question a he-ne laser lambda 633 nm is passed through a, Ask an Expert

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Question: A He-Ne laser (lambda = 633 nm) is passed through a diffraction grating 1.25 m from a screen. The first order line (m = 1) is 63.5 cm from the central maximum.

Part A: Determine the number of lines per mm for the grating.

Please show all work so I can completely understand all concepts. Thanks.

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