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Cellular phones transmit voice communication using waves in which band?
AUltrahigh frequency
BUltralight frequency
CUltrasonic frequencies
DUltraviolet frequencies
Answer & Solution
Correct answer: A. Ultrahigh frequency
1. Mobile telephony uses radio waves rather than light.
2. The particular slice of the radio spectrum is named.
3. Cellular phones use radio waves in the ultrahigh frequency band.
4. So the answer is the ultrahigh frequency band.
_Source: NCERT Class XII Physics Part I, Ch 8 'Electromagnetic Waves'_
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