After five half-lives what will be the fraction of initial s... | PHYSICS - RADIOACTIVITY | SolveeIt | Solveeit

Today, August 19

Question

After five half-lives what will be the fraction of initial substance ?

A

$\left( \frac{1}{2} \right)^{10}$

B

$\left( \frac{1}{2} \right)^{5}$

C

$\left( \frac{1}{2} \right)^{4}$

D

$\left( \frac{1}{2} \right)$

Answer

$\left( \frac{1}{2} \right)^{5}$

Explanation

Solution

Use N = ; = = $\frac { 1 } { 2 ^ { 5 } }$