The rays having highest penetrating power are:
-rays
-rays
-rays
X-rays
Gamma rays -
These are short wavelength rays emitted by radioactive isotopes. They can travel long distances. They can easily penetrate the body tissues and cause ionization.
- wherein
On the basis of the biological effects produced, the radioactive radiations can be grouped into two types, namely internal emitters and external emitters
Correct option is 3