13.Nuclei
medium

રેડિયોએકિટવ તત્ત્વનો અર્ધઆયુ $5$ વર્ષ છે,તો $15$ વર્ષ પછી વિભંજીત ભાગ કેટલો થાય?

A

$1/8$

B

$2/3$

C

$7/8$

D

$5/8$

Solution

(c) $\frac{N}{{{N_0}}} = {\left( {\frac{1}{2}} \right)^{15/5}} = \frac{1}{8}$

==> Decayed fraction $ = 1 – \frac{1}{8} = \frac{7}{8}$

Standard 12
Physics

Similar Questions

Start a Free Trial Now

Confusing about what to choose? Our team will schedule a demo shortly.