Specimen · 9702/01 · 2022 · Q271 marks · sit it in its paper
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CIE-9702-2022-SP-p01 · Question 27

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27 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? A 1 B 3 C 11 D 13

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