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A-LevelPhysicsWaves9702/12 · Oct/Nov 2024 · Q251 Mark

An electromagnetic wave in free space has a frequency of 3.0 × 10¹⁶ Hz. Which row gives the principal region of this wave and an example of an electromagnetic wave with a lower frequency?

Aprincipal region: infrared, wave with lower frequency: visible light

Bprincipal region: infrared, wave with lower frequency: X-rays

Cprincipal region: ultraviolet, wave with lower frequency: visible light

Dprincipal region: ultraviolet, wave with lower frequency: X-rays

✓ Correct answer

C: principal region: ultraviolet, wave with lower frequency: visible light

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About this question

Topic: Waves, A-Level Physics (syllabus 9702). Multiple choice, 1 mark.
Source: A-Level Physics, Oct/Nov 2024 Paper 1 Variant 2, question 25.

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