Question

If T is half life of radioactive material, the fraction that would remain after a time $T/2$ is.

• A. $1/2$
• B. $1/\sqrt{2}$
• C. $3/4$
• D. $\frac{\sqrt{2}-1}{\sqrt{2}}$

Answer 1

The correct option is A $1/2$

$1/2$

Half life is the time required for a quantity to reduce to half of its initial value. If T is the half life then after time $T/2$,$1/2$ fraction remains.