`90%` of the active nuclei present in a radioactive sample are found to remain undecyayed after `1` day. The precentage of undecayed nuclei left after two days will be

80% of the radioactive nuclei present in a sample is found to remain undecayed after one day. The percentage of undecayed nuclei left after two days will be a. 64 b. 20 c. 46 d. 80

80% of the radioactive nuclei present in a sample is found to remain undecayed after one day. The percentage of undecayed nuclei left after two days will be a. 64 b. 20 c. 46 d. 80

A radioactive sample remains undecayed 9/16 after time t.How much sample remains undecayed after time t/2

A radioactive sample remains undecayed 9/16 after time t.How much sample remains undecayed after time t/2

The fraction of the radioactive sample will remain undecayed after 4 half-life periods is

A radioactive sample is decayed 20% in one day. After next two days, the undecayed percentage of nuclei will be

A radioactive sample is decayed 20% in one day. After next two days, the undecayed percentage of nuclei will be

80% of the radioactive nuclei are left undecayed in one day then % of nuclei left undecayed after two days will be:

The decay constant of a radioactive substance is 1 per month. The percentage of radioactive substance left undecayed after two months will be