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Gamma Decay

A radioactive...

Question

A radioactive substance emits radiations:

A

α, β

and

γ

simultaneously

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B

in the order

α, β

and

γ

one by one

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C

X-rays and

γ

-rays

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D

α

or

β

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Solution

The correct option is D $α$ or $β$
A radioactive substance can emit either $α$ or $β$ partilces. $α$ particles are helium nuclei whereas $β$ particles are electrons.

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