The value of decay constant of `Co^(60)` is `2.5xx 10^(-7)"min"^(-1)` . The activity of 2.0 g of the sample is nearly :

The t_(1//2) of radioactive K-40 is 5.274 years (lambda = 2.5 xx 10^(-7) "min"^(-1)) . The decay activity of 2.0 g of the sample is about

The activity of a sample of radioactive element .^(100)A is 6.02 curie. Its decay constant is 3.7 xx 10^(4) s^(-1) . The initial mass of the sample will be:

The decay constant for the radioactive nuclide 64Cu is 1.516 xx 10^(-5) s^(-1) . Find the activity of a sample containing 1mug of ^64Cu . Atomic weight of copper = 63.5 g mole^(-1) . Neglect the mass difference between the given radioisotope and normal coper.

The decay constant for the radioactive nuclide 64Cu is 1.516 xx 10^(-5) s^(-1) . Find the activity of a sample containing 1mug of 64Cu . Atomic weight of copper = 63.5 g mole^ (-1). Neglect the mass difference between the given radioisotope and normal copper.

The decay constant for the radioactive nuclide 64Cu is 1.516 xx 10^(-5) s^(-1) . Find the activity of a sample containing 1mug of 64Cu . Atomic weight of copper = 63.5 g mole^ (-1). Neglect the mass difference between the given radioisotope and normal copper.

The activity of a sample of radioactive element X^(100) is 6.02 curie. Its decay constant is 3.7 xx 10^(-4) s^(-1) . The initial mass of the sample will be a. 10^(-6) g b. 10^(-8) g c. 10^(-20) g d. 10^(-15) g

The activity of a sample of radioactive element X^(100) is 6.02 curie. Its decay constant is 3.7 xx 10^(4) s^(-1) . The initial mass of the sample will be a. 10^(-6) g b. 10^(-8) g c. 10^(-20) g d. 10^(-15) g