A sample has `4 xx 10^16` radioactive nuclei of half-life `10` days. The number of atoms decaying in `30` days is.

A saample of radioactive elements contains 4xx10^(16) active nuclei. If half-life of element is 10 days, then the number of decayed nuclei after 30 days is

A saample of radioactive elements contains 4xx10^(16) active nuclei. If half-life of element is 10 days, then the number of decayed nuclei after 30 days is

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 saample of radioactive elements contains 4xx10^(10) active nuclei. If half-life of element is 10 days, then the number of decayed nuclei after 30 days is

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

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

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

Radon (Ra) decays into Polonium (P_0) by emitting an alpha- particle with half-life of 4 days. A sample contains 6.4 xx 10^10 atoms of R_a . After 12 days, the number of atoms of R_a left in the sample will be