Question

The temperature at which the root mean square velocity of a molecule will be doubled than at 100°C

• A. 1219°C
• B. 1492°C
• C. 400°C
• D. 400 K

Answer 1

Answer: (A)

1219°C

Answer 2

$v_{rms} \propto \sqrt{T};$ To double the rms velocity temperature should be four times i.e.

$T_{2} = 4T_{1} = 4(273 + 100) = 1492K = 1219^{o}C$