A Diffraction Grating Has 5000 Lines/cm with White Light (400-650nm) $\circ$

question 33

Multiple Choice

A diffraction grating has 5000 lines/cm with white light (400-650nm) .What wavelength(s) will experience constructive interference at 45 ^$\circ$ ?

• A)442 nm
• B)471 nm
• C)505 nm
• D)589 nm
• E)None of these will be visible.

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