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(A)A beam of monochromatic light is incident on a single slit of width 0.650 mm. A...

(A)A beam of monochromatic light is incident on a single slit of width 0.650 mm. A diffraction pattern forms on a wall 1.35 m beyond the slit. The distance between the positions of zero intensity on both sides of the central maximum is 2.32 mm. Calculate the wavelength of the light in nm.

(B)A grating with 251 grooves/mm is used with an incandescent light source. Assume the visible spectrum to range in wavelength from 400 nm to 700 nm.

In how many orders can one see the entire visible spectrum?


In how many orders can one see the short-wavelength region of the visible spectrum?

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