Why is the ionosphere important for radio communication?
Answer and explanation
Correct answer: It can reflect radio waves
Option B is correct because solar radiation ionizes gases in the ionosphere, producing electrically charged particles. These charged regions can refract or reflect certain radio waves back toward Earth, allowing signals to travel beyond the direct line of sight and sometimes over long distances. The exact effect depends on frequency and ionospheric conditions. Options A, C, and D describe rainfall, polar ice, and surface winds, none of which explains the ionosphere’s communication role.
Frequently asked questions
What is the correct answer to this question?
It can reflect radio waves
Why is this the correct answer?
Option B is correct because solar radiation ionizes gases in the ionosphere, producing electrically charged particles. These charged regions can refract or reflect certain radio waves back toward Earth, allowing signals to travel beyond the direct line of sight and sometimes over long distances. The exact effect depends on frequency and ionospheric conditions. Options A, C, and D describe rainfall, polar ice, and surface winds, none of which explains the ionosphere’s communication role.
Which subject and chapter does this question cover?
This is a Class 11 Accountancy question. Chapter: Theory Base of Accounting.
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