If white light is incident on a diffraction grating:
A)the first order lines for all visible wavelengths occur at smaller diffraction angles than any of the second order lines
B)some first order lines overlap the second order lines if the ruling separation is small but do not if it is large
C)some first order lines overlap second order lines if the ruling separation is large but do not if it is small
D)some first order lines overlap second order lines no matter what the ruling separation
E)first and second order lines have the same range of diffraction angles

Question

Quizplus · Accepted Answer

The first order lines for all visible wavelengths occur at smaller diffraction angles than any of the second order lines because the diffraction angle increases with the order of diffraction for a given wavelength.

If White Light Is Incident on a Diffraction Grating