Physics
GATE PH Nuclear and Particle Physics PYQs
Build your understanding with focused practice from past exam papers.
Questions 51–60 of 61. Imported answers require independent review unless marked reviewed.
Question 25
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For nucleus
Er, a
state is at 90 keV. Assuming
Er to be a rigid rotor, the energy of its
state is ________ keV (up to one decimal place).Log in to check the answer
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Inside a large nucleus, a nucleon with mass 939 MeV c
has Fermi momentum 1.40 fm
at absolute zero temperature. Its velocity is Xc, where the value of X is ______ (up to two decimal places).(
)Log in to check the answer
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4 MeV
-rays emitted by the de-excitation of
are attributed, assuming spherical symmetry, to the transition of protons from
state to
state. If the contribution of spin-orbit term to the total energy is written as
, the magnitude of C is ______ MeV (up to one decimal place).Log in to check the answer
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An
particle is emitted by a
nucleus. Assuming the potential to be purely Coulomb beyond the point of separation, the height of the Coulomb barrier is ______ MeV (up to two decimal places).(
)Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 16
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The Compton wavelength of a proton is ______ fm. (up to two decimal places). (
kg,
J s,
C,
ms
)Log in to check the answer
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Which one of the following conservation laws is violated in the decay
Your answerChoose one option.
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Electromagnetic interactions are:
Your answerChoose one option.
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In the nuclear reaction
, the particle
isYour answerChoose one option.
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for the ground state of the
nucleus isYour answerChoose one option.
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The
decays at rest to
and
. Assuming the neutrino to be massless, the momentum of the neutrino is ________ MeV/c. (up to two decimal places) (
,
).Log in to check the answer
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