JEE Mains Model Paper 2

If the temperature is T, according to kinetic theory of gases translational KE =

3

2

KT
The oxygen molecule will escape from earth if

3

2

KT >

1

2

mve2 i.e. T >

mve2

3K

i.e. T >

2.76×10−26×(11.2×103)2

3×1.39×10−23

i.e. T > 8.36 × 104 K