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Physics (AS & A Level) · May / June 2017 · Paper 11 · Question 28

9702The diffraction grating

A parallel beam of light of wavelength 600 nm is incident normally on a diffraction grating. The grating has 300 lines per millimetre. What is the total number of intensity maxima from the grating?

  1. A1
  2. B3
  3. C11
  4. D13

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Correct answer: C. 11

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