The modulation index of an FM carrier having a carrier swing of 200 kHz and a modulating signal 10 kHz is Options: A . &nbsp 5 B . &nbsp 10 C . &nbsp 20 D . &nbsp 25 E . &nbsp If 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

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 $\times △ f$ or $△ f = \frac{C S}{2}$
$∴ △ f = \frac{200}{2}$ = 100kHz
Now $m_{f}$ = $\frac{△ f}{f_{m}} = \frac{100}{10} = 10$

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