Question

Which layer of atmosphere is helpful for the sky wave propagation of electromagnetic wave upto 30 megahertz

Answer 1

Answer:

mesosphere

Explanation:

because electromagnetic radiation reach there

Answer 2

Answer:

The ionosphere of the atmosphere is helpful for the sky wave propagation of electromagnetic waves up to 30 megahertz.

Explanation:

• The ionosphere is used for the propagation of electromagnetic waves up to 30 Megahertz.
• Electromagnetic waves make use of the ionosphere due to the presence of charged ions in the region of about 60 to 300 km from the earth's surface.
• Within a specific frequency range, these ions act as a reflecting medium for radio or communication signals. This feature of the ionosphere is used for long-distance wave transmission with minimal attenuation and signal strength loss.

#SPJ3