A-LevelPhysicsWaves9702/12 · Oct/Nov 2011 · Q251 Mark
Which statement about electromagnetic radiation is correct?
AWaves of wavelength 5 × 10⁻⁹ m are high-energy gamma rays.
BWaves of wavelength 3 × 10⁻⁸ m are ultra-violet waves.
CWaves of wavelength 5 × 10⁻⁷ m are infra-red waves.
DWaves of wavelength 9 × 10⁻⁷ m are light waves.
✓ Correct answer
B: Waves of wavelength 3 × 10⁻⁸ m are ultra-violet waves.
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