In which layer does extremely low density make the path of gas particles long?
Answer and explanation
Correct answer: Exosphere
The relevant concept is mean free path, the average distance a particle travels between collisions. In the exosphere, atmospheric density is extremely low, so particles are far apart and collisions are infrequent. Their mean free path therefore becomes very long, and some particles can escape Earth’s gravitational influence. The lower three layers contain much denser gas, so option D is correct.
Frequently asked questions
What is the correct answer to this question?
Exosphere
Why is this the correct answer?
The relevant concept is mean free path, the average distance a particle travels between collisions. In the exosphere, atmospheric density is extremely low, so particles are far apart and collisions are infrequent. Their mean free path therefore becomes very long, and some particles can escape Earth’s gravitational influence. The lower three layers contain much denser gas, so option D is correct.
Which subject and chapter does this question cover?
This is a Class 11 Accountancy question. Chapter: Theory Base of Accounting.
