Physics
2021 · Paper 1
Take it one question at a time. Try an answer, then check your understanding.
Complete GATE PH 2021 Paper 1 overview, original pages and practice · Timed previous-paper practice
Questions 16–18 of 65. Imported answers require review unless explicitly marked reviewed.
Question 6
Open questionPHMCQ1 markNeeds review
Consider a solenoid of length
and radius
, where
. A steady-current flows through the solenoid. The magnetic field is uniform inside the solenoid and zero outside. 
Among the given options, choose the one that best represents the variation in the magnitude of the vector potential,
at
, as a function of the radial distance
in cylindrical coordinates.Useful information: The curl of a vector
, in cylindrical coordinates isYour answerChoose one option.
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Open questionPHMCQ1 markNeeds review
Assume that
(
) undergoes first forbidden
-decay from its ground state with spin-parity
, to a final state
. The possible values for
and
, respectively, areYour answerChoose one option.
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 8
Open questionPHMCQ1 markNeeds review
In an experiment, it is seen that an electric-dipole (
) transition can connect an initial nuclear state of spin-parity
to a final state
. All possible values of
areYour answerChoose one option.
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