QUESTIONS under NUCLEAR PHYSICS

As a student of physics here is a simple test to evaluate how vast you are in nuclear physics.

1.   Describe the atomic model established by rutherford scattering experiment , highlighting the appropriate observation and inferences drawn from the experiment.

2.   From einstein mass energy relation, calculate the masses of  the electrons, protons and neutrons in atomic mass units.

3.   Given that the nuclear radius is cast as r=1.4a2/3x10-15m, calculate the density of the nuclear matter.

4.   Explain, quantitatively, the nature of nuclear force as compared to gravitational and electromagnetic forces.

5.   Define isotopes, explain the physics behind the formation of isotopes and give examples.

6.   Define isobars, discuss it and give examples

7.   Define isotones, discuss it and give examples.

8.   Expain nuclear stability in terms of neutron to proton ration

9.   Explain nuclear stability in terms of size of nucleus

10.                     Defines strong nuclear interaction.

11.                     Explain the major constituent of the nucleus.

12.                     Discuss the major constituent of the protons.

13.                     What is mass defects.

14.                     Differentiate between actual mass and measured mass.

15.                     Explain the reason behind the mass defects.

16.                     Calculate the binding energies of carbon-12, oxygen -16 and nitrogen -14

17.                     Compare the ration of strong force to electromagnetic, weak and gravitational forces.

18.                     `what could the nature of nuclear force.

19.                     Why that the coulombs force between the positively charged protons in the nucleus do not act.

20.                     At a certain instant , a radioactive sample contains 1012 atoms  if the half life is 20 days calculate.

i)      The number o decay after three seconds

ii)   The number of decays after 2 hrs.

iii)            Number of atoms remaining after 20 days.

iv) Number of atoms remaining after 180days.

v)   How long will it take before 106 atoms remains

vi)What is he count rate?

If you can answer the above questions perfectly, there is no doubt that you have understood your nuclear physics.

If you have any other question, you can add them here, other physicist may attend to it.