The distribution of speeds of molecules of a gas depends on
(i) temperature , (ii) volume
(iii) pressure , (iv) molecular mass

Options

A. `(i),(ii),(iii)`
B. `(i),(iv)`
C. `(i),(ii),(iii),(iv)`
D. `(i),(iii)`

Answer

B

Explanation

Maxwell and Boltzmann have shown that the actual distribution of molecular speeds depends on the temperature and the molecular mass of the gas. On increasing the temperature, the most probable speed (corresponding to the maximum in the curve) increases. Also , the speed distribution curve broadens at higher temperature. Broadening of the curve shows that the number of molecules moving at higher speed increases. Speed distribution also depends on the molecular mass of the molecules. At the same temperature, the gas molecules with higher molecular mass have slower speed than the molecules with lower moleculat mass.