Question: In a particular diffraction grating pattern, the red component (700 nm) in the second-order maximum is deviated at an angle of 20o. (a) How many

In a particular diffraction grating pattern, the red component (700 nm) in the second-order maximum is deviated at an angle of 20o.
(a) How many lines per centimeter does the grating have?
(b) If the grating is illuminated with white light, how many maxima of the complete visible spectrum would be produced?

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