← Physics (0625)
Q1 / 5
Electromagnetic spectrum
Foundation
2 marks
State two uses of radio waves and explain how they carry information.
A
Radio/TV broadcasting and mobile phones; information encoded by AM (amplitude) or FM (frequency) modulation
B
Radio waves are used only for cooking food (microwaves)
C
Radio waves carry information by changing their wavelength only
D
Radio waves are visible and carry image signals directly
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