Question

What' is the correct order of velocity of alpha $(\alpha ),$ beta $(\beta )$ and gamma $(\gamma )$ rays?

• A. $\alpha >\beta >\gamma$
• B. $\alpha >\gamma >\beta$
• C. $\gamma >\alpha >\beta$
• D. $\gamma >\beta >\alpha$

Answer 1

Answer: (D)

The order of $\alpha ,\beta$ and $\gamma$ rays is
$\underset{(3\times 10^{8}m/s)}{\gamma }>\underset{(2.36\times 10^{8}m/sto2.83\times 10^{8}m/s)}{\beta }>\underset{(2\times 10^{7}m/s)}{\alpha }$