Physics
GATE PH Nuclear and Particle Physics PYQs
Build your understanding with focused practice from past exam papers.
Questions 41–50 of 61. Imported answers require independent review unless marked reviewed.
Question 21
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A particle
undergoes strong decay
. The isospin of
is _____.Log in to check the answer
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According to the Fermi gas model of the nucleus, the nucleons move in a spherical volume of radius
, where
is the mass number and
is an empirical constant with the dimensions of length. The Fermi energy of the nucleus
is proportional toYour answerChoose one option.
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In the center of mass frame, two protons each having energy 7000 GeV, collide to produce protons and anti-protons. The maximum number of anti-protons produced is _____.
(Assume the proton mass to be 1 GeV/
)Log in to check the answer
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Considering baryon number and lepton number conservation laws, which of the following processes are allowed?
(i)
(ii)
Your answerChoose one option.
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A massive particle X in free space decays spontaneously into two photons. Which of the following statements is true for X?
Your answerChoose one option.
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The nuclear spin and parity of
in its ground state isYour answerChoose one option.
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Low energy collision (
-wave scattering) of pion (
) with deuteron (d) results in the production of two protons (
). The relative orbital angular momentum (in units of
) of the resulting two-proton system for this reaction isYour answerChoose one option.
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A radioactive element X has a half-life of 30 hours. It decays via alpha, beta and gamma emissions with the branching ratio for beta decay being 0.75. The partial half-life for beta decay in unit of hours is
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The elementary particle
is placed in the baryon decuplet, shown below, at 
Your answerChoose one option.
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In the decay,
, what is
?Your answerChoose one option.
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