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Q.
What' is the correct order of velocity of alpha $ (\alpha ), $ beta $ (\beta ) $ and gamma $ (\gamma ) $ rays?
J & K CETJ & K CET 2006
Solution:
The order of $\alpha, \beta $ and $\gamma$ rays is
$ \underset{(3\times 10^8\,m/s)}{\gamma} > \underset{(2.36 \times 10^8\,m/s\, to\, 2.83\times 10^8\,m/s)}{\beta} > \underset{(2\times 10^7 \,m/s)}{\alpha}$