A radioactive material has half-life of `10` days. What fraction of the material would remain after `30` days ?

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

A radioactive substance has a halflife of 50 days . Fraction of the material left behind after 100 day will be :

A certain radioactive element has half-life of 4 days. The fraction of material that decays in 2 days is

A certain radioactive element has half-life of 4 days. The fraction of material that decays in 2 days is

A sample contains 10 mg of radioactive material of half life 270 days. The mass of remaining radioactive material after 540 days will be

Initial amount of the radioactive element with half life 10 days is 16 g. What amount in gm of this element will remain after 40 days?