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Standard XII

Physics

Creating AM

If fc and ...

Question

If $f_{c}$ and $f_{m}$ are the frequencies of carrier wave and signal, then the band width is

f_{m}

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2 f_{m}

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f_{c}

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2 f_{c}

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Solution

The correct option is C $2 f_{m}$
For the given frequencies of carrier waves and signal, sideband frequencies are given by $f_{C} - f_{M}$ and $f_{C} + f_{M}$
Hence , bandwidth is given by $(f_{C} + f_{M}) - (f_{C} - f_{M}) = 2 f_{M}$

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If fc and fm are the frequencies of carrier wave and signal, then the band width is

The correct option is C 2fmFor the given frequencies of carrier waves and signal, sideband frequencies are given by fC−fM and fC+fMHence , bandwidth is given by (fC+fM)−(fC−fM)=2fM

If $f_{c}$ and $f_{m}$ are the frequencies of carrier wave and signal, then the band width is

The correct option is C $2 f_{m}$
For the given frequencies of carrier waves and signal, sideband frequencies are given by $f_{C} - f_{M}$ and $f_{C} + f_{M}$
Hence , bandwidth is given by $(f_{C} + f_{M}) - (f_{C} - f_{M}) = 2 f_{M}$