Question

The ratio of the specific charge (e) of a proton to that of an
an ???? particle is
(a) 1 : 2 (b) 1 : 1/4
(c) 1 : 4 (d) 1 : 1/2

Answer 1

Answer:

Specific charge =

Mass

Charge

ratio.

Let the specific charge of proton be p.

Therefore specific charge of alpha particle = 2p ( ∵α particle has 2 protons and 2 neutrons, neutrons have same mass as protons but charge is zero)

Therefore, ratio of specific charge of protons to alpha particles = p / 2p = 1/2 = 1:2

⇒1:2