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JEE Main 29 June 2022 Shift 2 Solved Paper

Section: Physics
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Question : 58 of 90
 
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The half life of a radioactive substance is 5 years. After x years a given sample of the radioactive substance gets reduced to 6.25% of its initial value. The value of x is____
[29-Jun-2022-Shift-2]
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