NEET Physics Kinetic Theory of Gases Questions Solved

The molecules of a given mass of a gas have r.m.s, velocity of 200 ms^-1 at 27°C and 1.0 x 10⁵ Nm^-2 pressure. When the temperature and pressure of the gas are respectively, 127°C and 0.05 X 10⁵ Nm^-2 the rms velocity of its molecules in   ms^-1 is

(a)400/√3         (b)100√2/3

(c)100/3            (d)100√2