Asked by Alex

A laser emitting light of wavelength 580 nm is incident on a diffraction grating. What is the maximum number of lines per centimeter for which the m=5 principal maximum will be visible

Answers

Answered by drwls
They should have specified an angle of incidence.
Assume the order number is m = 5 for a reflection angle of 90 degrees. Solve for the groove spacing.
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