If radio communication shows greater absorption during daytime, which ionospheric part is it more related to?
Answer and explanation
Correct answer: D layer
The governing concept is ionospheric absorption of radio waves. Solar ultraviolet and X-ray radiation increases ionisation in the lower ionospheric D region during daylight. This region is relatively collision-rich, so radio energy can be absorbed, especially at some frequencies, producing daytime signal attenuation. Option A is correct. The stratopause and tropopause are atmospheric boundaries, while the exosphere is too high and diffuse to be the intended absorbing layer in this question.
Frequently asked questions
What is the correct answer to this question?
D layer
Why is this the correct answer?
The governing concept is ionospheric absorption of radio waves. Solar ultraviolet and X-ray radiation increases ionisation in the lower ionospheric D region during daylight. This region is relatively collision-rich, so radio energy can be absorbed, especially at some frequencies, producing daytime signal attenuation. Option A is correct. The stratopause and tropopause are atmospheric boundaries, while the exosphere is too high and diffuse to be the intended absorbing layer in this question.
Which subject and chapter does this question cover?
This is a Class 11 Accountancy question. Chapter: Theory Base of Accounting.
