19. Monochromatic light is normally incident on a diffraction grating that has
10000 slits and is 1 cm wide. If the second-order line is deviated at 30
degrees, what is the wavelength of the incident light?
(A) 250 nm
(B) 433 nm
(C)
500 nm
(D) 866 nm
(E) 1000 nm
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統計: 尚無統計資料
統計: 尚無統計資料