Physics 9702 · AS & A Level · The diffraction grating

The diffraction grating — practice question

A parallel beam of light with wavelength $600\,\text{nm}$ is directed at right angles onto a diffraction grating. The grating contains $300$ lines per millimetre. What is the total number of intensity maxima produced by the grating?

  • A1
  • B3
  • C11
  • D13

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