Q. 484.5( 2 Votes )
A uranium reactor develops thermal energy at a rate of 300 KW. Calculate the amount of 235U being consumed every second. Average energy released per fission is 200 MeV.
Let n atoms consume per sec.
Total energy released per sec= No. of atoms consumed per sec × Energy released per atom
n= 9.375× 1015
235g of 235U contains 6.023× 1023 atoms
9.375× 1015 atoms are present in = 3.65× 10-6g
Rate this question :
Calculate the energy that can be obtained from 1 kg of water through the fusion reaction
2H + 2H →3H + p.
Assume that 1.5 × 10–2% of natural water is heavy water D2O (by number of molecules) and all the deuterium is used for fusion.
HC Verma - Concepts of Physics Part 2
A nuclide 1 is said to be the mirror isobar of nuclide 2 if Z1 =N2 and Z2 =N1.
(a) What nuclide is a mirror isobar of?
(b) Which nuclide out of the two mirror isobars have greater binding energy and why?
Physics - Exemplar
The mass of a H-atom is less than the sum of the masses of a proton and electron. Why is this?Physics - Exemplar
Are the nucleons fundamental particles, or do they consist of still smaller parts? One way to find out is to probe a nucleon just as Rutherford probed an atom. What should be the kinetic energy of an electron for it to be able to probe a nucleon? Assume the diameter of a nucleon to be approximately 10–15 m.Physics - Exemplar
In pair annihilation, an electron and a positron destroy each other to produce gamma radiation. How is the momentum conserved?Physics - Exemplar
The binding energy of a H-atom, considering an electron moving around a fixed nuclei (proton), is . (m = electron mass). If one decides to work in a frame of reference where the electron is at rest, the proton would be moving around it. By similar arguments, the binding energy would be
(M = proton mass)
This last expression is not correct because
Physics - Exemplar
Calculate the minimum energy needed to separate a neutron from a nucleus with Z protons and N neutrons in terms of the masses MZ, N, MZ, N–1 and the mass of the neutron.HC Verma - Concepts of Physics Part 2