Atoms And Nuclei Question 371

Question: Consider $ \alpha $ particles, $ \beta $ particles and $ \gamma $ - rays, each having an energy of 0.5 MeV. In increasing order of penetrating powers, the radiations are:

Options:

A) $ \alpha ,\beta ,\gamma $

B) $ \alpha ,\beta ,\gamma $

C) $ \beta ,\gamma ,\alpha $

D) $ \gamma ,\beta ,\alpha $

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Answer:

Correct Answer: A

Solution:

  • The penetrating power is dependent on velocity. For a given energy, the velocity of y radiation is highest and a-particle is least.


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