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A Diffraction Grating Just Resolves the Wavelengths 400

Question 20

Multiple Choice

A diffraction grating just resolves the wavelengths 400.0 nm and 400.1 nm in first order.The number of slits in the grating is:

A) 400
B) 1000
C) 2500
D) 4000
E) not enough information is given

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