Nuclei questions
336 published questions with worked solutions.
- A radioactive substance decays to ( 1 16 )^ th of its initial activity in 80 days. The half life of the radioactive substance...
- A radioactive material decays by simultaneous emissions of two particles with half lives 1400 years and 700 years respectively....
- A nucleus of mass M emits -ray photon of frequency ' '. The loss of internal energy by the nucleus is : [Take 'c' as the speed of...
- A nucleus with mass number 184 initially at rest emits an -particle. If the Q value of the reaction is 5.5 MeV, calculate the...
- The nuclei of which one of the following pairs of nuclei are isotones ?
- Fission of nuclei is possible because the binding energy per nucleon in them :
- In any fission process the ratio (mass of fission products/mass of parent nucleus) is :
- If 'f' denotes the ratio of the number of nuclei decayed (N_d) to the number of nuclei at t = 0 (N_0) then for a collection of...
- A radioactive sample has an average life of 30 m and is decaying. A capacitance 200 is first charged and later connected with...
- Two radioactive substances X and Y originally have N_1 and N_2 nuclei respectively. Half life of X is half of the half life of Y....
- From the given data, the amount of energy required to break the nucleus of aluminium 27 13 Al is —— x 10^ -3 J. Mass of neutron =...
- The half-life of radioactive element is _____.
- Some nuclei of a radioactive material are undergoing radioactive decay. The time gap between the instances when a quarter of the...
- The half-life of ^ 198 Au is 3 days. If atomic weight of ^ 198 Au is 198 g/mol then the activity of 2 mg of ^ 198 Au is [in...
- A radioactive sample is undergoing decay. At any time t_1, its activity is A and another time t_2, the activity is A 5 . What is...
- Nucleus A is having mass number 220 and its binding energy per nucleon is 5.6 MeV. It splits in two fragments 'B' and 'C' of mass...
- A sample contains 10^ -2 kg each of two substances A and B with half lives 4 s and 8 s respectively. The ratio of their atomic...
- Two lighter nuclei combine to from a comparatively heavier nucleus by the relation given below: ^ 2 _ 1 X + ^ 2 _ 1 X = ^ 4 _ 2...
- The disintegration rate of a certain radioactive sample at any instant is 4250 disintegrations per minute. 10 minutes later, the...
- A radioactive nucleus can decay by two different processes. Half-life for the first process is 3.0 hours while it is 4.5 hours...
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