Why is the exosphere considered the final layer of the atmosphere?
Answer and explanation
Correct answer: Because it gradually merges into space
The governing concept is the gradual transition from atmosphere to outer space. The exosphere contains extremely sparse gas, with particles so widely separated that it has no sharp upper boundary; its outer portion gradually merges with interplanetary space. Therefore option D is correct. Dense rain clouds and abundant surface dust belong to lower atmospheric regions, while the statement that its temperature is always zero is scientifically false and does not define the exosphere.
Frequently asked questions
What is the correct answer to this question?
Because it gradually merges into space
Why is this the correct answer?
The governing concept is the gradual transition from atmosphere to outer space. The exosphere contains extremely sparse gas, with particles so widely separated that it has no sharp upper boundary; its outer portion gradually merges with interplanetary space. Therefore option D is correct. Dense rain clouds and abundant surface dust belong to lower atmospheric regions, while the statement that its temperature is always zero is scientifically false and does not define the exosphere.
Which subject and chapter does this question cover?
This is a Class 11 Accountancy question. Chapter: Theory Base of Accounting. Topic: Covers GAAP.
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