Why is temperature said to be high in the thermosphere even though air is extremely thin?
Answer and explanation
Correct answer: Because the few particles absorb very high-energy radiation
In the thermosphere, the small number of particles can absorb intense solar ultraviolet and X-ray radiation, giving individual particles very high kinetic energy. Temperature measures average particle energy, not the total amount of heat present or the density of the air. Thus thin air can have a high temperature, while its total heat content remains low. Option A is correct; clouds, dense water vapour, and rain are not responsible.
Frequently asked questions
What is the correct answer to this question?
Because the few particles absorb very high-energy radiation
Why is this the correct answer?
In the thermosphere, the small number of particles can absorb intense solar ultraviolet and X-ray radiation, giving individual particles very high kinetic energy. Temperature measures average particle energy, not the total amount of heat present or the density of the air. Thus thin air can have a high temperature, while its total heat content remains low. Option A is correct; clouds, dense water vapour, and rain are not responsible.
Which subject and chapter does this question cover?
This is a Class 11 Accountancy question. Chapter: Theory Base of Accounting.
