Question 545: Atoms & Nuclei

Question

Given below are two statements
Statement I : The law of radioactive decay states that the number of nuclei undergoing the decay per unit time is inversely proportional to the total number of nuclei in the sample.
Statement II : The half of a radionuclide is the sum of the life time of all nuclei, divided by the initial concentration of the nuclei at time t = 0.
In the light of the above statements, choose the most appropriate answer from the options given below :

Accepted Answer

According to law of radioactive decay
Rate of decay $$\left( { - {{dN} \over {dt}}} ight) \propto N$$ (No. of undecayed nuclei)
Half life is the time in which half of the radioactive sample decays
$$	herefore$$ Both statements are incorrect.

Answer

Statement I is incorrect but statement II is correct

Answer

Both statement I and statement II are correct

Answer

Both statement I and statement II are incorrect

Answer

Statement I is correct but statement II is incorrect

Atoms & Nuclei

Choose the correct answer: