Physics
GATE PH topic:physics PYQs
Build your understanding with focused practice from past exam papers.
Questions 591–600 of 650. Imported answers require independent review unless marked reviewed.
Question 6
Open questionPHMCQ1 markNeeds review
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?
Your answerChoose one option.
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The atomic mass and mass density of Sodium are 23 and 0.968 g cm
, respectively. The number density of valence electrons is ______
cm
. (Up to two decimal places.) (Avogadro number,
).Log in to check the answer
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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:
Your answerChoose one option.
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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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Two identical masses of 10 gm each are connected by a massless spring of spring constant 1 N/m. The non-zero angular eigenfrequency of the system is ______ rad/s. (up to two decimal places).
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The phase space trajectory of an otherwise free particle bouncing between two hard walls elastically in one dimension is a
Your answerChoose one option.
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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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Open questionPHNAT1 markNeeds review
The contour integral
evaluated along a contour going from
to
along the real axis and closed in the lower half-plane by a half circle is equal to ______. (up to two decimal places).Log in to check the answer
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