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A radioactive substance decay 25% in 10 ...

A radioactive substance decay 25% in 10 minutes . If at start there are `4 xx 10^(20)` atoms present. After how much time will the number of atoms be reduced t0 `10^(20)` atoms? (given In 3=1.098)

A

10.98 min

B

21.97 min

C

48.19 min

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
C
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