JAMB - Physics (1981 - No. 34)
The mass of a proton is approximately equal to that of
an \(\alpha\)-particle
a \(\beta\)-particle
\(\gamma\)-ray
an electron
a neutron
คำอธิบาย
Protons and neutrons have approximately the same mass, about 1.67 × 10\(^{-24}\) grams