Nuclear and Particle Physics (CSIR (Council of Scientific & Industrial Research) Physical Sciences): Questions 1 - 4 of 17
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Question number: 1
» Nuclear and Particle Physics » Reaction Mechanism
Appeared in Year: 2014
Question
Consider the four processes,
(i)
(ii)
(iii)
(iv)
Which of the above is/are forbidden for free particles? (December)
Choices
Choice (4) | Response | |
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a. | (i) and (ii) |
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b. | only (ii) |
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c. | (i) and (iv) |
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d. | (ii) and (iv) |
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Question number: 2
» Nuclear and Particle Physics » Semiempirical Mass Formula
Appeared in Year: 2014
Question
If the binding energy B of a nucleus (mass number A and charge Z) is given by,
; where, then the Z for the most stable isobar for a nucleus with is –
(December)
Choices
Choice (4) | Response | |
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a. | 68 |
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b. | 92 |
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c. | 84 |
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d. | 72 |
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Question number: 3
» Nuclear and Particle Physics » Quark Model
Appeared in Year: 2014
Question
In a classical model, a scalar (spin-0) meson consists of a quark and an antiquark bound by a potential, Where and . If the messes of the quark and antiquark are negligible, the mass of the meson can be estimated as approximately – (June – 2014)
Choices
Choice (4) | Response | |
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a. |
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b. |
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c. |
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d. |
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Question number: 4
» Nuclear and Particle Physics » Mesons
Appeared in Year: 2013
Question
Muons are produced through the annihilation of particle and its antiparticle, namely the process, A muon has a rest mass of and its proper life time is . If the center of mass energy of the collision is in the laboratory frame that coincides with the center – of – mass frame, then the fraction of muons that will decay before they reach a detector placed 6 km away from the interaction point is – (June)
Choices
Choice (4) | Response | |
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a. |
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b. |
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c. |
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d. |
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