The count rate from a radioactive sample falls from 4-0 times 10-5 per second to 1-0 times 10-6 per second in 20 hours -what will be the count rat 100 hours after the beginning -

Question

The count rate from a radioactive sample falls from  4-0 times 10-5  per second to  1-0 times 10-6  per second in 20 hours -what will be the count rat 100 hours after the beginning -

Toppr Admin · Accepted Answer

The count rate from a radioactive sample falls from $$ 4.0 \times 10^5 $$ per second to $$ 1.0 \times 10^6 $$ per second in 20 hours .what will be the count rat 100 hours after the beginning ?