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The r.m.s speed of the molecules of an i...

The r.m.s speed of the molecules of an ideal gas Is `V_0` If pressure of the gas is halved but temperature is kept constant then r.m.s. speed of the gas molecule will be

A

`V_0 /2`

B

`2V_0`

C

`sqrt2 V_0`

D

`V_0`

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