A) \[\alpha \]-rays have more penetrating power than \[\beta \]-rays
B) \[\alpha \]-rays have less penetrating power than \[\gamma \]-rays
C) \[\beta \]-rays have less penetrating power than \[\gamma \]-rays
D) \[\beta \]-rays have more penetrating power than \[\alpha \]-rays
Correct Answer: A
Solution :
The order of penetrating power is : a < b < g-rays. It is due to lower mass and high speed.
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