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Physics
List of top Physics Questions asked in COMEDK UGET
The temperature of an object is $60^{\circ} C$. Its value in Fahrenheit scale is
COMEDK UGET - 2014
COMEDK UGET
Physics
thermal properties of matter
What is the dimensional formula for universal gravitational constant
$G$
?
COMEDK UGET - 2014
COMEDK UGET
Physics
Units and measurement
Einstein was awarded Nobel prize for his work in
COMEDK UGET - 2014
COMEDK UGET
Physics
Units and measurement
One second is defined as
COMEDK UGET - 2014
COMEDK UGET
Physics
Units and measurement
On an average, a human heart is found to beat $72$ times a minute. Its frequency and period are
COMEDK UGET - 2014
COMEDK UGET
Physics
Oscillations
A proton and helium nucleus are shot into a magnetic field at right angles to the field with same kinetic energy. Then the ratio of their radii is
COMEDK UGET - 2014
COMEDK UGET
Physics
Moving charges and magnetism
Which one of the following represents uniform motion ?
COMEDK UGET - 2014
COMEDK UGET
Physics
Motion in a straight line
An aeroplane is flying horizontally with a velocity of
$360\, km\, h^{-1}$
. The distance between the tips of the wings of the aeroplane is
$50\, m$
. The vertical component of the earth's magnetic field is
$4 \times 10^{-4} \, Wb \, m^{-2}$
. The induced e.m.f. is
COMEDK UGET - 2014
COMEDK UGET
Physics
Electromagnetic induction
The centre of mass of a system of two bodies of masses
$M$
and
$m, (M > m)1$
separated by a distance
$d$
is
COMEDK UGET - 2014
COMEDK UGET
Physics
System of Particles & Rotational Motion
A concave mirror forms an enlarged, erect, virtual image of an object, only when the object is placed
COMEDK UGET - 2014
COMEDK UGET
Physics
Ray optics and optical instruments
Find the energy equivalent of one atomic mass unit in joules and in
$MeV$
.
COMEDK UGET - 2014
COMEDK UGET
Physics
Nuclei
The photoelectric threshold for a certain metal is
$3600\, \mathring A$
. The maximum energy of the ejected photoelectrons by radiation of
$2000\, \mathring A$
is (Given
$h = 6.62 \times 10^{-34} J \, s$
)
COMEDK UGET - 2014
COMEDK UGET
Physics
Photoelectric Effect
The mutual inductance between two coils depends upon
COMEDK UGET - 2014
COMEDK UGET
Physics
Inductance
The ratio of
$ \frac{C_P}{C_V}$
for a diatomic gas is
COMEDK UGET - 2014
COMEDK UGET
Physics
kinetic theory
The normal magnetic flux passing through a coil changes with time according to the equation
$\phi = 6t^2 - 5t + 1$
. What is the magnitude of the induced current at
$t = 0.253\, s$
and resistance
$10 \, \Omega $
?
COMEDK UGET - 2014
COMEDK UGET
Physics
Faradays laws of induction
The magnetic properties of a magnet is lost at its
COMEDK UGET - 2014
COMEDK UGET
Physics
Magnetism and matter
The universal gas law
$\left( \frac{PV }{T} = { constant} \right)$
is applicable to
COMEDK UGET - 2014
COMEDK UGET
Physics
kinetic theory
In an inelastic collision, which of the following is true?
COMEDK UGET - 2014
COMEDK UGET
Physics
work, energy and power
The dimensions of energy and torque respectively are
COMEDK UGET - 2014
COMEDK UGET
Physics
Dimensional Analysis
A policeman on duty detects a drop of
$15 \%$
in the pitch of the horn of a motor car as it crosses him. If the velocity of sound is
$330 \, m \, s^{-1}$
, calculate the speed of the car.
COMEDK UGET - 2014
COMEDK UGET
Physics
Waves
The
$TV$
signals have a bandwidth of
$3.7\, MHz$
. The number of
$TV$
channels that can be accommodated with a band of
$3700 \,GHz$
is
COMEDK UGET - 2014
COMEDK UGET
Physics
communication systems
Two boys are standing at ends
$A$
and
$B$
of a ground where
$AB = 200\, m$
. The boy at B starts running in a direction perpendicular to
$AB$
with a speed of
$6\, m \,s^{-1}$
? The boy at A starts simultaneously with a velocity of
$10 \, m \, s^{-1}$
and catches the other at time t where the time
$t$
is
COMEDK UGET - 2014
COMEDK UGET
Physics
Motion in a plane
A hospital uses an ultrasonic scanner to locate tumors in a tissue. The operating frequency of the scanner is
$4.2 \, MHz$
. The speed of sound in a tissue is
$1.7 \, km \, s^{-1}$
. The wavelength of sound in the tissue
COMEDK UGET - 2014
COMEDK UGET
Physics
Waves
A pump on the ground floor of a building can pump up water to fill the tank of
$30\, m^3$
in
$15\,min$
. If the tank is
$40\,m$
above the ground, and the efficiency of the pump is
$30\,%$
, the power consumed by the pump is
$(g = 10 \, m \, s^{-2})$
COMEDK UGET - 2014
COMEDK UGET
Physics
work, energy and power
The increase in the height of the tower of height
$200\,m$
to get its coverage range tripled is
COMEDK UGET - 2014
COMEDK UGET
Physics
communication systems
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