Statement-1: Sky wave signals are used for lo | vedclass

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(C) Statement-$1$ is true because sky waves (ionospheric propagation) are reflected by the ionosphere,allowing them to travel over long distances beyo

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Statement-$1$ is true,Statement-$2$ is false.

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(C) Statement-$1$ is true because sky waves (ionospheric propagation) are reflected by the ionosphere,allowing them to travel over long distances beyond the horizon.Statement-$2$ is false because sky waves are actually more susceptible to fading and variations due to changes in the ionospheric density,but in the context of stability and reliability for consistent communication,ground waves are generally considered more stable over short distances,whereas sky waves are used specifically because they can cover long distances that ground waves cannot. However,the statement that they are 'less stable' is often considered incorrect in standard physics curriculum contexts because sky waves are the primary method for long-distance communication,and their variability is a characteristic,not a lack of stability compared to ground waves which are limited by attenuation. Thus,Statement-$1$ is true and Statement-$2$ is false.

List-$I$ (Signal)	List-$II$ (Bandwidth)
$i$. Speech Signal	$a$. $4.2 \text{ MHz}$
$ii$. Music Signal	$b$. $6 \text{ MHz}$
$iii$. Video Signal	$c$. $20 \text{ kHz}$
$iv$. $T$.$V$. Signal	$d$. $2.8 \text{ kHz}$

Statement-$1$: Sky wave signals are used for long-distance radio communication.
Statement-$2$: These signals are generally less stable than ground wave signals.

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Statement-$1$: Sky wave signals are used for long-distance radio communication.Statement-$2$: These signals are generally less stable than ground wave signals.