Nuclei - Result Question 64
65. $\alpha$-particles, $\beta$-particles and $\gamma$-rays are all having same energy. Their penetrating power in a given medium in increasing order will be
[NEET Kar. 2013]
(a) $\beta, \gamma, \alpha$
(b) $\gamma, \alpha, \beta$
(c) $\alpha, \beta, \gamma$
(d) $\beta, \alpha, \gamma$
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Answer:
Correct Answer: 65. (c)
Solution:
- (c) Increasing order of penetrating power : $\alpha<\beta<\gamma$.
For same energy, lighter particle has higher penentrating power.
