Question

If by mistake some radioactive substance gets into the human body, then from the point of view of radiation damage, the most harmful will be one that emits:

• A. $\gamma$-rays
• B. Neutrons
• C. $\beta$-rays
• D. $\alpha$-rays

Answer 1

The correct option is A $\gamma$-rays

Order of pentetrating power.

$\alpha <\beta <\gamma$

$\therefore$ From the point of view of radiation damage, the most harmful will be one that emits $\gamma$ - rays.