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# Define Half-life of a Radioactive Substance - ISC (Arts) Class 12 - Physics (Theory)

ConceptMass-energy and Nuclear Binding Energy Nuclear Binding Energy

#### Question

Define half-life of a radioactive substance

#### Solution

The half-life of a radioactive substance: The time taken by half the number of atoms of the radioactive element, to disintegrate completely, is called half-life period T.

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#### APPEARS IN

2014-2015 (March) (with solutions)
Question 14.1 | 3.00 marks

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Solution Define Half-life of a Radioactive Substance Concept: Mass-energy and Nuclear Binding Energy - Nuclear Binding Energy.
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