A radioactive substance disintegrates 1/64 of initial value in 60 s. The half-life of this substance is

A radioactive substance decays to (3)/(4) th of original value in 2h. The half-life of the substance is

A radioactive substance decays to 1/16 th of the initial mass in 40 days. The half life of the substance is….. Day.

A radioactive substance decays to 1/16 th of its initial mass in 40 days. The half life of the substance, in days, is?

A radioactive substance decays to 1//16^(th) of its initial mass in 40 days. The half life of the substance, in days, is :

After 20 min, the amount of certai radioactive substance disintegrate was 15/16 original amount. What is the half-life ofg the radioactive substance?

A radioactive substance reduces to 1/32 of its original value in 300 days. The half life of radioactive substance is

A substance is kept for 2 hours and three-fourth of that substance disintegrates during this period. The half life of the substance is

A substance is kept for 2 hours and three-fourth of that substance disintegrates during this period. The half life of the substance is