At time , the number of nuclei of a radioactive substance is . At , the number…

PHYSICS · Subjective · CBSE · Physics · Nuclei · Nuclei

Problem

At time

t=0

, the number of nuclei of a radioactive substance is

100

. At

t=1\text{ s}

, the number becomes

90

. Find the number of nuclei at

t=2\text{ s}