Physics (AS & A Level) · May / June 2024 · Paper 11 · Question 26
Light of frequency 6.7 × 10¹⁴ Hz in a vacuum is incident normally on a diffraction grating that contains 4.0 × 10⁵ lines m⁻¹. What is the angle between the adjacent second and third order intensity maxima?
- A12°
- B21°
- C33°
- D54°
As printed in the paper
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Correct answer: A. 12°
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