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The tuned circuit of an oscillator in a ...

The tuned circuit of an oscillator in a simple `AM` transimitter employs a `250` micro henry coil and `1 nf` condenser. If the oscillartor output is modulated by audio frequency upto `10KHz`, the frequency range occupied by the side bands in `KHz` is

A

`210` to `230`

B

`258` to `278`

C

`308` to `328`

D

`118` to `128`

Text Solution

Verified by Experts

The correct Answer is:
C
`f_(c)=(1)/(2pisqrt(LC))=318 khz`, `f_(m)=10khz`
`LSB=f_(c)-f_(m)=308`
`USB=f_(c)+f_(m)=328`
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