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A 2.0-cm wide diffraction grating has 1000 slits. It is illuminated by light of wavelength 630nm....

A 2.0-cm wide diffraction grating has 1000 slits. It is illuminated by light of wavelength 630nm.

What are the angles of the first two diffraction orders?

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Answer #1

Diffraction grating formula

Number of slits in the given width 2.0 cm is

Wavelength of light

For the first order of spectrum, ,

Angle of diffraction

For the second order of spectrum, ,

Angle of diffraction

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