Question: Which of the following statements about diffraction gratings is true?

Options:

1. They can only produce first-order maxima
2. They can produce multiple orders of maxima
3. They do not produce any maxima
4. They only work with monochromatic light

Correct Answer: They can produce multiple orders of maxima

Solution:

Diffraction gratings can produce multiple orders of maxima due to the constructive interference of light waves.