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Emission and Absorption Spectra

An audio freq...

Question

An audio frequency of $10 k H z$ is transmitted by SSB after AM with carrier waves of frequency $1 M H z$ . The frequency of current in output load is

A

1010 k H z

or

990 k H z

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B

1000 M H z

or

1010 M H z

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C

110 k H z

or

990 k H z

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D

110 M H z

or

990 M H z

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Solution

The correct option is B $1010 k H z$ or $990 k H z$
SSB transmission to signal are possible at load:
$ω_{c} + ω_{m}$ or $ω_{c} - ω_{m}$
$⟹ (1000 + 10) k H z$ or $(100 - 10) k H z$
$⟹ 1010 k H z$ or $990 k H z$

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