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11th Class Physics Gravitation / गुरुत्वाकर्षण Question Bank Gravitation Conceptual Problems

  • question_answer
    Lighter gases like \[{{H}_{2}}\], He, etc. are rare in the atmosphere of the earth. Why?

    Answer:

                    Usually the average velocity of the molecules of lighter gases is greater than the escape velocity at the earth's surface. So lighter gases have escaped from the earth's atmosphere.


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