Physics · GRAVITATION
हिन्दीGiven below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): The Moon has no atmosphere. Reason (R): The escape speed on the Moon's surface is approximately \( 2.3\text{ km/s} \), which is smaller than the thermal velocities of many gas molecules. In the light of the above statements, choose the correct answer from the options given below:
Correct answer · Option 1
Both (A) and (R) are true and (R) is the correct explanation of (A).
Explanation
Gas molecules if formed have thermal velocities larger than the escape speed (\( 2.3\text{ km/s} \)) and escape the Moon's gravitational pull.