The temperature, at which the root mean square velocity of hydrogen molecules equals their escape velocity from the earth, is closest to: [Boltzmann Constant k_B =1.38 \times 10^{–23} J/K Avogadro Number NA = 6.02 \times 10^{26} /kg Radius of Earth : 6.4 \times 10^6 m Gravitational acceleration on Earth = 10 ms^{–2} ] [8 Apr 2019 Shift 2]

JEE Main 8 Apr 2019 Paper 2 Solved Paper

Section: Physics

Question : 10 of 90

Marks: +1, -0

The temperature, at which the root mean square velocity of hydrogen molecules equals their escape velocity from the earth, is closest to:
[Boltzmann Constant kB=1.38×10–23 J/K
Avogadro Number NA=6.02×1026 /kg
Radius of Earth : 6.4×106 m
Gravitational acceleration on Earth = 10 ms–2 ]

[8 Apr 2019 Shift 2]

650 K
104 K
3×105 K
800 K

Validate

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