Physics
GATE PH format:mcq PYQs
Build your understanding with focused practice from past exam papers.
Questions 101–110 of 380. Imported answers require independent review unless marked reviewed.
Question 36
Open questionPHMCQ2 marksNeeds review
Binding energy and rest mass energy of a two-nucleon bound state are denoted by
and
, respectively, where
is the speed of light. The minimum energy of a photon required to dissociate the bound state isYour answerChoose one option.
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Open questionPHMCQ2 marksNeeds review
The spin-orbit interaction in a hydrogen-like atom is given by the Hamiltonian
where
is a real constant. The splitting between levels
and
due to this interaction isYour answerChoose one option.
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Open questionPHMCQ2 marksNeeds review
Consider the Lagrangian
. If
and
denote the generalized momenta conjugate to
and
, respectively, then the canonical equations of motion 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 39
Open questionPHMCQ2 marksNeeds review
The X-ray diffraction pattern of a monatomic cubic crystal with rigid spherical atoms of radius 1.56 Å shows several Bragg reflections of which the reflection appearing at the lowest
value is from (111) plane. If the wavelength of X-ray used is 0.78 Å, the Bragg angle (in
, rounded off to one decimal place) corresponding to this reflection and the crystal structure, 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 40
Open questionPHMCQ2 marksNeeds review
In a parallel plate capacitor, the plate at
is grounded and the plate at
is maintained at a potential
. The space between the two plates is filled with a linear dielectric of permittivity
, where
is the permittivity of free space. Neglecting the edge effects, the electric field (
) inside the capacitor isYour answerChoose one option.
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Open questionPHMCQ2 marksNeeds review
The equation of motion for the forced simple harmonic oscillator is
where
and
. Which one of the following options is correct?Your answerChoose one option.
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Open questionPHMCQ2 marksNeeds review
An atom is subjected to a weak uniform magnetic field
. The number of lines in its Zeeman spectrum for transition from
to
isYour 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 1
Open questionGAMCQ1 markNeeds review
“You are delaying the completion of the task. Send _____ contributions at the earliest.”
Your answerChoose one option.
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Open questionGAMCQ1 markNeeds review
References : _____ : : Guidelines : Implement (By word meaning)
Your answerChoose one option.
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Open questionGAMCQ1 markNeeds review
In the given figure, PQRS is a parallelogram with PS = 7 cm, PT = 4 cm and PV = 5 cm. What is the length of RS in cm? (The diagram is representative.)
Your answerChoose one option.
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