Question

14. Suppose a gas sample contains 3 x 1023
molecules. Each 1/3rd of the molecules have speed
2 x 103 cm/s, 3 x 103 cm/s and 4 x 103 cm/s. The
rms speed (in cm/s) of gas sample will be
[NCERT Pg. 148]
(1)
29 X 106
3
(2)
11x 106
3
(3) V3 x 10
(4) 15 x 10​

Answer 1

Explanation:

Answer. Explanation: Out of 6×1023 molecules, 2×1023 molecules have rms speed 104cm/s, 2×1023 molecules have rms speed 2×104cm/s and 2×1023 molecules have rms speed 3×104cm/s.