If 1 'S ' be the specific charge (e/m) of cathode rays and 2 'S ' be that of positive ray then which is true. [hint : Mass of electron is less]

${\mathrm{S}}_1=$specific charge of cathode rays $=1.75882\times {10}^{11}$c/kg its value is independent on nature of gas taken in discharge tube.

${\mathrm{S}}_2=$specific charge of positive rays$=9.58\times {10}^{7 }\mathrm{c}/\mathrm{kg}$ its value is dependent on nature of gas taken in discharge tube. So, ${\mathrm{S}}_1>{\mathrm{S}}_2$