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प्रश्न
Answer briefly.
Why high-frequency carrier waves are used for the transmission of audio signals?
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उत्तर
An audio signal has a low frequency (< 20 kHz) and low-frequency signals cannot be transmitted over large distances. Because of this, high-frequency carrier waves are used for transmission.
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संबंधित प्रश्न
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(b) 1057 MHz (frequency of radiation arising from two close energy levels in hydrogen; known as Lamb shift).
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(d) 5890 Å - 5896 Å [double lines of sodium]
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| D. | Mobile Phones | S. | Radio Waves |
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