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Question

The phenomenon explained by tunnel effect is

A
β -decay
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B
α -decay
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C
γ -decay
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D
All the above
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Solution

The correct option is A α -decay
In nuclear physics the tunnel effect explain the alpha decay of radioactive nuclei. As a result of the joint action of short-range nuclear forces of attraction and electrostatic (Coulomb) forces of repulsion, an alpha particle must pass across a three-dimensional potential barrier.

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