Question

Arrange electron(e), proton (p) and deuteron(d) in the increasing order of their specific charge:

• A. $e>p<d$
• B. $d<p<e$
• C. $p>e>d$
• D. $d>e>p$

Answer 1

Answer: (B)

$d<p<e$

Specific charge is defined as the ratio of charge of particle to its mass.
Proton, electron and deuteron have same magnitude of charge. The mass increases in the order.

electron < proton < deuteron
The increasing order of specific charge is deuteron < proton < electron.