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Physics
List of top Physics Questions
In which medium the velocity of light is more?
Physics
Ray optics and optical instruments
In which case the potential energy decrease on
Physics
work, energy and power
In vacuum, speed of light depends upon
Physics
Wave optics
In van der Waal?? equation the critical pressure
$P_c$
is given by
Physics
kinetic theory
In TV broadcasting both picture and sound are transmitted simultaneously. In this
Physics
communication systems
In the Searle's method to determine the Young's modulus of a wire, a steel wire of length 156 cm and diameter 0.054 cm is taken as experimental wire. The average increase in length for
$1\frac{1}{2}$
kg wt is found to be 0.05.cm. Then the Young's modulus of the wire
Physics
mechanical properties of solids
In the propagation of electromagnetic waves, the angle between the direction of propagation and plane of polarisation is
Physics
Wave optics
In the pressure cooker the cooking is faster because the increase of vapour pressure
Physics
thermal properties of matter
In the nuclear reactors the moderators are used to :
Physics
Atoms
In the formula
$X = 3YZ^2$
,
$X$
and
$Z$
have dimensions of capacitance and magnetic induction respectively. The dimensions of
$Y$
in
$MKSQ$
system are
Physics
Units and measurement
In the following reaction, the energy released is
$4 ^{1}_{1}H \to ^{4}_{2}He + 2e^{+} +$
Energy Given : Mass of
$^{1}_{1}H = 1.007825 \,u$
Mass of
$^{4}_{2}He = 4.002603\, u$
Mass of
$e^{+} = 0.000548\, u$
Physics
Nuclei
In the figure a block of weight
$60\,N$
is placed on a rough surface. The coefficient of friction between the block and the surface is
$0.5$
. The weight
$W$
such that the block does not slip on the surface is
Physics
laws of motion
In the dead beat galvanometer, the coil is wound on a frame made of :
Physics
Electromagnetic induction
In the common emitter configuration of n-p-n transistor
$10^{10}$
electrons enter the emitter in 1
$\mu s$
and 2% of the electrons are lost to the base, the current gain of the amplifier is
Physics
Semiconductor electronics: materials, devices and simple circuits
In the Bohr model of the hydrogen atom, the lowest orbit corresponds to
Physics
Atoms
In the above graph, point B indicates
Physics
mechanical properties of solids
In stationary waves, nodes are the points where there is
Physics
Waves
In sky-wave propagation, skip-distance depends on :
Physics
communication systems
In single slit diffraction pattern
Physics
Wave optics
In SI, the unit of latent heat is
Physics
thermal properties of matter
In SI, unit of quantity of heat is
Physics
thermal properties of matter
In Rutherford experments on
$\alpha$
- ray scattering the number of particles scattered at
$90^\circ$
be 28 per minute. Then the number of particles scattered per minute by the same foil but at 60
$^\circ$
are
Physics
Atoms
In positive logic, the logic state 1 corresponds to
Physics
Semiconductor electronics: materials, devices and simple circuits
In
$p-n-p$
transistor circuit, the collector current is
$10\, mA$
. If
$90\%$
of the holes reach the collector, the emitter and base currents respectively are
Physics
Semiconductor electronics: materials, devices and simple circuits
In mixture of ideal gases, the molecules have the same
Physics
kinetic theory
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