If White Light Is Incident on a Diffraction Grating

question 13

Multiple Choice

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

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