A sample of radioactive material is used to provide desired doses of radiation for medical purposes. The total time for which the sample can be used will depend

A freshly prepared radioactive sample of half life 1 hour emits radiations that are 128 times as intense as the impossible safe limit. The minimum time after which this sample can be safely used is

A sample contains 16 gm of radioactive material, the half-life of which is two days. After 32 days, the amount of radioactive material left in the sample is

A sample contains 16 gm of radioactive material, the half-life of which is two days. After 32 days, the amount of radioactive material left in the sample is

Can a radioactive sample emit all types of radiations at the same time ?

Which material protects us from radiation ?

mendel used which organism as his experimental sample?

Which of the following water samples is used in car batteries?