Question

The temperature of an ideal gas is increased from 120 K to 480 K. If at 120 K, the root mean square speed of gas molecules is V, then at 480, it will be ______.

पर्याय

• 4V

• 2V

• `"V"/2`

• `"V"/4`

Answer 1

The temperature of an ideal gas is increased from 120 K to 480 K. If at 120 K, the root mean square speed of gas molecules is V, then at 480, it will be 2V.

Explanation:

`"V"_("rms"_1)/("V"_("rms"_2)) = sqrt("T"_1/"T"_2) = sqrt(120/480) = 1/2`

V = `1/2 "V"_2` = 2V