Question

At what temperature will the rms speed of oxygen molecules become just sufficient for escaping from the Earth's atmosphere? (Given : Mass of oxygen molecule (m) = 2.76 × 10^–26kg Boltzmann's constant k_B = 1.38 × 10^–23JK^–1) :- 

(1) 2.508 × 10⁴K 

(2) 8.360 × 10⁴K 

(3) 5.016 × 10⁴K 

(4) 1.254 × 10⁴K

Answer 1

The correct answer is (2)