For a monatomic gas kinetic energy = E. The relation with rms velocity is (a) 1/ 2 2E u m (b) 1 / 2 3E u 2m (c) 1 / 2 E u 2m (d) 1/ 2 E u 3m

For mono atomic gas K.E=E= 3 3 2 2 kT RT 2 RT E 3 >> And, Root mean square speed 3RT / m 2 3 E 3 Root mean square speed m x 12 2E 2E Root mean square speed m m