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  • Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R. Assertion A : Earth has atmosphere whereas moon doesn't have any a

Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A : Earth has atmosphere whereas moon doesn't have any atmosphere.
Reason R : The escape velocity on moon is very small as compared to that on earth.
In the light of the above statements. choose the correct answer from the options given below:

Option: 1

Both A and R are correct and R is the correct explanation of A
 


Option: 2

 A is false but R is true
'0


Option: 3

 Both A and R are correct but R is NOT the correct explanation of A
 


Option: 4

 A is true but R is false


Answers (1)

best_answer

V_{e s c}=\sqrt{\frac{2 G M}{r}}=\sqrt{2 g r}
Radius of moon is less than that of earth and acceleration due to gravity is also less on moon as compared to that on earth.
Thus, \mathrm{V}_{\mathrm{esc}} of Moon <\mathrm{V}_{\mathrm{esc}} of Earth
This is also the reason behind escape of atmosphere from moon.

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