A radio active sample contains `10^(6)` radioactive nucleus it s half life is 20 sec . Number of remaining nucleus after 10 seconds.

A sample of a radioactive substance has 10^(6) radioactive nuclei. Its half life time is 20 s How many nuclei will remain after 10 s ?

A sample of a radioactive substance has 10^(6) radioactive nuclei. Its half life time is 20 s How many nuclei will remain after 10 s ?

A sample of radioactive element contains 4 xx 10^16 active nuclei. Half life of element is 10 days, then the number of decayed nuclei after 30 days is

A radio active sample contains 600 radio active atoms. Its half life period is 30 minutes. The no. of radio active atoms remaining, if the decay accurs for 90 minutes 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

A radioactive sample of half life 10 days contains 1000X nuclei. Number of original nuclei present after 5 days is

A radioactive sample of half life 10 days contains 1000X nuclei. Number of original nuclei present after 5 days is