Nuclear Physics [IAS (Admin.) Mains Physics]: Questions 1 - 8 of 20
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Question 1
Appeared in Year: 2011 (IFS)
Describe in Detail Subjective▾
(i) What angle do the make with the z – axis when for an electron?
(ii) Determine the value of the total angular momentum for a 3d electron.
(Paper-2) (Section – A)
EditExplanation
(i) Angle do the make with z – axis is given as,
Where, is the z – component of the angular momentum, which is given as,
is the m…
… (609 more equations, 4 figures) …
Question 2
Appeared in Year: 2011 (IFS)
Write in Short Short Answer▾
Find the density of nucleus. (Given, nuclear radius of carbon ) (Section - B)
EditQuestion 3
Appeared in Year: 2004
Describe in Detail Subjective▾
Write down the Bethe - Weizsacker mass formula. Explain various terms of the formula.
EditExplanation
Let us see how the picture of a nucleus as a drop of liquid accounts for the observed variation of binding energy per nucleon with mass number. We start by assuming that the energy associated with each nucleon - nucleon bond has some value U. This energy is actually negative since attractive force are involved, but it usually written as positive be…
… (1537 more equations, 69 figures) …
Question 4
Appeared in Year: 2004
Describe in Detail Subjective▾
Write the Weizacker mass formula and explain the significance of various terms.
EditExplanation
Let us see how the picture of a nucleus as a drop of liquid accounts for the observed variation of binding energy per nucleon with mass number. We start by assuming that the energy associated with each nucleon - nucleon bond has some value U. This energy is actually negative since attractive force are involved, but it usually written as positive be…
… (1218 more equations, 3 figures) …
Question 5
Appeared in Year: 2004
Describe in Detail Subjective▾
Calculate the binding energy per nucleon for and .
EditExplanation
The binding energy in of the nucleons which has neutrons, is given by
… (600 more equations) …
Question 6
Appeared in Year: 2016
Describe in Detail Subjective▾
Show that in the nuclear shell model, the level spacing between major oscillator shells is approx. .
EditExplanation
The radial density distribution is given by
Malenka, Levinger and Kent have carried out calculation of for square wells of infinite and finite depth. The densit…
… (196 more equations) …
Question 7
Appeared in Year: 2010
Describe in Detail Subjective▾
Predict from the single particle shell model the shell configuration, ground state spin and parity for the following nuclei:
,
EditExplanation
The shells are filled according to
The lost particle is a proton with spin
… (117 more equations) …
Question 8
Appeared in Year: 2005
Describe in Detail Subjective▾
Write the Weizacker mass formula and explain the significance of various terms.
EditExplanation
Let us see how the picture of a nucleus of as a drop of liquid accounts for the observed variation of binding energy per nucleon with mass number. Each bend energy is should by two nucleons, each has a binding energy of . When an assembly of spheres of the same size is packed together into the smallest volu…
… (509 more equations, 11 figures) …