A particle having almost zero mass and exactly zero charge is

Question

A particle having almost zero mass and exactly zero charge is (A) positron (B) electron (C) neutron (D) neutrino

Tardigrade Admin · Accepted Answer

We know that the neutrino is the particle which has almost zero mass and exactly zero charge. Positron has the charge

+ e

and mass

m_{e}

[equal to electron mass].
Electron is a particle which has -

e

charge and

9.1 \times 1 0^{- 31} k g

mass.
Neutron is a particle which has zero charge and

1838 m_{e}

mass.
So, the required answer is neutrino.

Q. A particle having almost zero mass and exactly zero charge is