If radioactive decay constant of radium is 1.07 × {10^{ - 4}} per year, then its half life period i

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13.Nuclei

easy

If the radioactive decay constant of radium is $1.07 \times {10^{ - 4}}$ per year, then its half life period is approximately equal to .........$years$

A

$8900$

B

$7000$

C

$6476$

D

$2520$

(AIIMS-1998)

Solution

(c) Half-life ${T_{1/2}} = \frac{{0.693}}{\lambda } = \frac{{0.693}}{{1.07 \times {{10}^{ – 4}}}} = 6476\;years$

Standard 12

Physics

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