The half-life of a radioisotope is 10 h . Find the total number of disintergrations in the tenth hour measured from a time when the activity was 1 Ci.

The half-life of a radioisotope is 10 h. Find the total number of disintegrations in the tenth hour measured · from a time when the activity was 1 Ci.

The half life of a radioisotope is 1.5 hours is (the initial mass of isotope is 32 g)

Calculate the total number of disintegration for a radioactive isotope in the twentieth hour which is measured from a time when activity was 2 Ci. Given that the half-life of the isotope is 20 h.

The half-life of a radioisotope is 1.5 hours. If its initial mass is 32g, the mass left undecayed after 6 hours is

The half-life of a radioactive element is 10 hours. How much will be left after 4 hours in 1g atom sample?

The half life of a radio active substance is 6 hours. The amount of the substance undergone disintegration when 36 gms of it undergoes decay for 18 hours is

Half life of a radio active element is 5 min . 10 sec . Time taken for 90% of it to disintergrate is nearly

Half life of a radioactive substance is 60 min. After 3 hours, the fraction of total number of atoms that have decayed would be