JEE PHYSICS MCQ: NUCLEI

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Application +4 | -1

The decay constant of a radioactive element, which disintegrates to 20 grams from 40 grams in 100 minutes is

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Correct option: A

0.00693\,\,{\min ^{ - 1}}

Option A (0.00693 min⁻¹) is correct because it's calculated directly from the half-life using the formula for the decay constant.

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