Q90 / 90 · JEE Main 2021 (31 Aug Shift 2) · Physics

A bandwidth of 6 MHz is available for A.M. transmission. If the maximum audio signal frequency used for modulating the carrier wave is not to exceed 6 kHz. The number of stations that can be broadcasted within this band simultaneously without interfering with each other will be __________.

Correct answer: 500

Solution

Band width =2×n× highest modulating frequency.
6MHz=2×n×6KHz
⇒ n=6×1062×6×103=500

Hence, the correct answer is 500.

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