Assertion :In alpha decay of different radioactive nuclides, energies of alpha particles has been compared. It is found that as energy of alpha particle increases the half life of the decay decreases. Reason: More is the energy in any decay process, more is the probability of decaying the nuclide which leads to faster rate of decay.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
In alpha decay, more energy of a nucleus leads to higher energy alpha particles emitted at a faster rate. Hence, when an increase in energy of alpha particles is observed half life of decay decreases.

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