If time t is required for a radioactive substance to become one third of its initial amount, what fraction would be left after 0.5 t ?

After 2 hr the radioactive substance becomes 1/16 th of original amount. The t_(1//2) in minutes is

Half life of a radioactive substance is 6 minute. If its initial amount is 32g, then amount present after 18 minute is

In a sample of a radioactive substance what fraction of the initial number of nuclei will remain undecayed after a time t =T/2 where T=half-life of radioactive substance.

What percentage of radioactive substance is left after 5 half lives?

A radioactive substance has a half-life of 1 year. The fraction of this material, that would remain after 5 years will be.

A sample of radioactive substance is found 90% of its initial amount after one day . What % of the original sample can be found after 3 days?

A sample of radioactive substance is found 90% of its initial amount after one day . What % of the original sample can be found after 3 days?

A sample of radioactive substance is found 90% of its initial amount after one day . What % of the original sample can be found after 3 days?

Number of nuclei of a radioactive substance at time t=0 are 2000 and 1800 at time t=2 s. number of nuclei left after t=6s is