ThermodynamicsHard

Question

The temperature of an ideal gas is increased from 120 K to 480 K. If at 120 K theroot mean square velocity of the gas molecules is v, at 480 K it becomes

Options

A.4 v
B.2 v
C.v / 2
D.v / 4

Solution


i.e.,    vrms ∝ √T
When temperature is increased from 120 K to 480 K (i.e., four times), the root mean square speed will become √4 to 2 times i.e., 2 v.

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