An 18 mm wide diffraction grating has rulings of 710 lines
An 18 mm wide diffraction grating has rulings of 710 lines per mm. Light is incident normally on the grating. Monochromatic light of 506 nm wavelength is used. What is the largest angle from the normal at which an intensity maximum is formed?
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an 18 mm wide diffraction grating has rulings of 710 lines per mm light is incident normally on the grating
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