The modulation index of an FM carrier having a carrier swing of 200 kHz and a modulating signal 10 kHz is Options: A . &nbsp5 B . &nbsp10 C . &nbsp20 D . &nbsp25 E . &nbspIf assertion is false but reason is true.

Answer: Option B : B CS = 2 × △ f or △ f = C S 2 ∴ △ f = 200 2 = 100kHz Now m f = △ f f m = 100 10 = 10

The modulation index of an FM carrier having a carrier swing of 200 kHz and a mo

Question

The modulation index of an FM carrier having a carrier swing of 200 kHz and a modulating signal 10 kHz is

Answer: Option B
:
B
CS = 2

\times △ f

△ f = \frac{C S}{2}

∴ △ f = \frac{200}{2}

= 100kHz
Now

m_{f}

\frac{△ f}{f_{m}} = \frac{100}{10} = 10

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