Question

Consider a-particles, b-particles & g rays, each having an energy of 0.5 MeV. Increasing order of penetrating power of the radiations are :

• A. a,b,g
• B. a,g,b
• C. b,g,a
• D. g,b,a

Answer 1

Answer: (C)

b,g,a

$\alpha \text{-particles are essentially helium ions, and these are}$

$\text{massive and are poorly peretrating.}$

$\text{3- radiations are fost moving electrons and these}$

$\text{are slightly more penetrating with respect to}\alpha \text{particles.}$

$\text{y - radiations are foster moving particles, on the photonic}$

$\text{scale, have the most penetrating power.}$

$\left[A\right]\text{as, b, g}$