32. In a particular diffraction grating pattern, the red component (700 nm) in the second-order maximum

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32. •• In a particular diffraction grating pattern, the red component (700 nm) in the second-order maximum is deviated at an angle of 20°.

(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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