Physics
GATE PH format:mcq PYQs
Build your understanding with focused practice from past exam papers.
Questions 341–350 of 380. Imported answers require independent review unless marked reviewed.
Question 37
Open questionPHMCQ2 marksNeeds review
A quarter wave plate introduces a path difference of
between the two components of polarization parallel and perpendicular to the optic axis. An electromagnetic wave with
is incident normally on a quarter wave plate which has its optic axis making an angle
with the
-axis as shown. The emergent electromagnetic wave would be
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Identical charges
are placed at five vertices of a regular hexagon of side
. The magnitude of the electric field and the electrostatic potential at the centre of the hexagon are respectivelyYour answerChoose one option.
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In the figure given below, the input to the primary of the transformer is a voltage varying sinusoidally with time. The resistor R is connected to the centre tap of the secondary. Which one of the following plots represents the voltage across the resistor R as a function of time?
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Consider a one-dimensional lattice with a weak periodic potential
. The gap at the edge of the Brillouin zone (
) is:Your answerChoose one option.
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Consider a triatomic molecule of the shape shown in the figure below in three dimensions. The heat capacity of the molecule at high temperature (temperature much higher than the vibrational and rotational energy scales of the molecule but lower than its bond dissociation energies) is:
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If the Lagrangian
is modified to
, which one of the following is TRUE?Your answerChoose one option.
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The phase space trajectory of an otherwise free particle bouncing between two hard walls elastically in one dimension is a
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The Poisson bracket
is equal toYour answerChoose one option.
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The wavefunction of which orbital is spherically symmetric:
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Which one of the following conservation laws is violated in the decay
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