Answer:

Explanation:
Given:
- frequency of the broadcast,

- we have the speed of the radiation equal to the speed of light,

The broadcast waves are the electromagnetic waves but it can travel only upto a hundred kilometers without any loss of information carried by it.
<u>The relation between the frequency and the wavelength:</u>



A eclipse of the sun can only occur at a new moon when the moon passes between earth and sun. If the moons shadow happens to fall upon earths surface at a time, you'll see some portion of the suns disk covered or aka eclipsed by the moon.. I hope that helps