55. Monochromatic light is normally incident on a diffraction grating that is 1 cm wide and has 12,500 slits. The first order line is
deviated at a 30° angle. What is the wavelength of the incident light?
(A) 300 nm
(B) 400 nm
(C) 500 nm
(D) 600 nm
(E) 1000 nm
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統計: A(3), B(49), C(6), D(3), E(0) #2356616
統計: A(3), B(49), C(6), D(3), E(0) #2356616