22 JEE Main 2021 Nuclear Physics previous-year questions with verified answers and step-by-step solutions.
These are the JEE Main 2021 previous-year questions from the Nuclear Physics chapter of Physics. Each links to a full solution with a verified answer key. To see the whole chapter across all years, visit the Nuclear Physics chapter hub.
A radioactive sample is undergoing α decay, At any time t 1 , its activity is A and another time t 2 , the activit…
A sample of a radioactive nucleus A disintegrates to another radioactive nucleus B , which in turn disintegrates to som…
Two radioactive substances X and Y originally have N 1 and N 2 nuclei respectively. Half life of X is half of the half…
The decay of a proton to neutron is :
Calculate the time interval between 33 % decay and 67 % decay if half-life of a substance is 20   min .
A radioactive material decays by simultaneous emissions of two particles with half lives of 1400 years and 700 years, r…
There are 10 10 radioactive nuclei in a given radioactive element. Its half-life time is 1   min . How many nuclei…
At time t = 0 , a material is composed of two radioactive atoms A and B , where N A ( 0 ) = 2 N B ( 0 ) The decay const…
A nucleus with mass number 184 initially at rest emits an α - particle. If the Q value of the reaction is 5 . 5 &#…
A nucleus of mass M emits γ -ray photon of frequency v . The loss of internal energy by the nucleus is: [Take c as…
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