Assertion (A): Television signals are receive | vedclass

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(D) Television signals typically operate in the frequency range of $40 MHz$ to $900 MHz$. Sky-wave propagation relies on the reflection of electromagn

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$A$ is false but $R$ is true.

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(D) Television signals typically operate in the frequency range of $40 MHz$ to $900 MHz$. Sky-wave propagation relies on the reflection of electromagnetic waves by the ionosphere,which is only effective for frequencies in the range of $3 MHz$ to $30 MHz$. Since television signal frequencies are much higher than $30 MHz$,they penetrate the ionosphere and are not reflected back to Earth. Therefore,television signals cannot be received through sky-wave propagation; they require line-of-sight communication or satellite communication. Thus,the Assertion $(A)$ is false,while the Reason $(R)$ is a true statement regarding the ionospheric reflection range.

Assertion $(A)$: Television signals are received through sky-wave propagation.
Reason $(R)$: The ionosphere reflects electromagnetic waves of frequencies in the range $(3-30)$ $MHz$.
Choose the correct option.

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Assertion $(A)$: Television signals are received through sky-wave propagation.Reason $(R)$: The ionosphere reflects electromagnetic waves of frequencies in the range $(3-30)$ $MHz$.Choose the correct option.