Monochromatic light with wavelength $690\ \text{nm}$ is incident on a diffraction grating having $300\ \text{lines mm}^{-1}$, creating a sequence of maxima on a screen. What is the maximum number of maxima that may be seen?
- A$4$
- B$5$
- C$8$
- D$9$
Physics 9702 · AS & A Level · The diffraction grating