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Physics · 2026 · 3 marks
CBSE 2026 · Region 4 · Set 2 · Q26
What are microwaves? How are they produced? Give any two uses of microwaves.
What are microwaves ? How are they produced ? Give any two uses of microwaves.
Marking-scheme solution
Microwaves are short wavelength radio waves with frequencies in gigahertz (GHz).
These are produced by special vacuum tubes called klystrons, magnetrons and Gunn diodes.
Uses (any two):These are used in radar systems in aircraft navigation.
These can also be used in radar for speed guns, to time fast balls, tennis serves and automobiles.
These can also be used in microwave ovens.
All Electromagnetic Waves questions2026 question paperNCERT solutions: Electromagnetic WavesPractice Electromagnetic Waves →
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CBSE Class 12 Physics past-paper question from the 2026 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.