At what temperature will the r.m.s. speed of oxygen molecules become just sufficient for escaping from the Earth's atmosphere? (Given: Mass of oxygen molecule (m) = 2.76 × 10⁻²⁶ kg, Boltzmann's constant k_B = 1.38 × 10⁻²³ J/K)
A
2.508 × 10⁴ K
B
8.360 × 10⁴ K
C
5.016 × 10⁴ K
D
1.254 × 10⁴ K

Question

At what temperature will the r.m.s. speed of oxygen molecules become just sufficient for escaping from the Earth's atmosphere? (Given: Mass of oxygen molecule (m) = 2.76 × 10⁻²⁶ kg, Boltzmann's constant k_B = 1.38 × 10⁻²³ J/K)

A

2.508 × 10⁴ K

B

8.360 × 10⁴ K

C

5.016 × 10⁴ K

D

1.254 × 10⁴ K

Accepted Answer

8.360 × 10⁴ K

Answer

2.508 × 10⁴ K

Answer

5.016 × 10⁴ K

Answer

1.254 × 10⁴ K

NEET 2018 Physics RMS Speed MCQ Question

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