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A 3.2-cmcm-wide diffraction grating has 2100 slits. It is illuminated by light of wavelength 530 nmnm...

A 3.2-cmcm-wide diffraction grating has 2100 slits. It is illuminated by light of wavelength 530 nmnm .

A. What is the angle (in degrees) of the first diffraction order?

B. What is the angle (in degrees) of the second diffraction order?

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Answer #1

The condition of the maximums are given by grating equation

where n is the order of maxima, d is the separation between adjacent slits. Solving for angle

Given that there are 2100 slits in 3.2cm. The separation between the slits is

where we have use 1cm =10-2m.

Given

A. For the first order diffraction corresponds to n=1,

B. For the second order diffraction corresponds to n=2,

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