Question

if S1 be the specific charge of cathode rays and S2 be that of positive ray then which is true
1) S1 = S2 2) S1 > S2 3) S1 < S2 4) any one of these

Answer 1

Explanation:

The ratio of e/m, (charge/mass) i.e., specific charge for a cathode ray is, cathode rays are made of electrons and independent of medium used.

Mass of electron =m

e

and charge of electron =e. So S

1

=e/m=e/m

e

and S

2

=e/m

p

, as we know mass of positive particles (proton) is more than electron so

S

1

>S

2

.