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There are \({10}^{10}\) radioactive nuclei in a given radioactive element, Its half-life time is 1 minute. How many nucl…

Q1

There are \({10}^{10}\) radioactive nuclei in a given radioactive element, Its half-life time is 1 minute. How many nuclei will remain after 30 seconds? \((\sqrt{2}=1.414)\)

[JEE Main 2021, 27 Aug (Shift 1)]

a

\(7\times {10}^{9}\)

b

\({10}^{5}\)

c

\(4\times {10}^{10}\)

d

\(2\times {10}^{10}\)

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