Waves the electromagnetic spectrum

1 mark · Normal

Which of the following electromagnetic waves has the longest wavelength?

AInfraredBX-raysCRadio wavesDUltraviolet

› Show answer

Correct option: Radio waves

Common mistakes: Infrared; X-rays; Ultraviolet

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Marking points

B1 · 1 mark · Correctly selects the longest wavelength from the given options.

Worked solution

Radio waves have the longest wavelength in the electromagnetic spectrum.

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