Question

A RADIOACTIVE SOURCE EMITS 3 TYPES OF RADIATION-

• name the radiation which has the highest ionising power
• radiation consisting of the same kind of particle as the cathode ray
• which radiation has the 0 mass

Answer 1

A radioactive substance emits 3 types of radiations :-
That are α, β and γ rays .
Out of three, α rays have the highest ionising power.
α rays consits of helium nucleus, β rays consits of fast moving electrons and γ rays consists of e-m waves or photons whereas cathode rays are stream of electrons.