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Diffraction grating

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Light is incident on a diffraction grating that has 2750 lines/cm. The second-order spectrum over the visible range (400-700 nm) is to be limited to 1.75 cm along a screen that is at a distance L from the grating. What is the required value of L?

The second order maximum is corresponding to m=2.

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Solution Summary

Solution starts with the condition for an m-order intensity maximum of wavelength lambda from a grating with spacing d. It mentions all the formulas used and shows detailed step by step computations.

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