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List of top Physics Questions asked in VITEEE
The electric resistance of a certain wire of iron is R. If its length and radius are both doubled, then:
VITEEE - 2019
VITEEE
Physics
Current electricity
The current in the $1\Omega$ resistor shown in the circuit is
VITEEE - 2019
VITEEE
Physics
Resistance
In a common base mode of a transistor, the collector current is
$5.488\, mA$
for an emitter current of
$5.60\, mA$
. The value of the base current amplification factor
$(\beta)$
will be
VITEEE - 2019
VITEEE
Physics
Transistors
If the kinetic energy of a free electron doubles, it�s de-Broglie wavelength changes by the factor
VITEEE - 2019
VITEEE
Physics
Dual nature of matter
The equivalent capacitance of the combination of the capacitors is
VITEEE - 2019
VITEEE
Physics
Capacitors and Capacitance
The half-life period and the mean life period of a radioactive element are denoted respectively by
$T_h$
and
$T_m$
. Then
VITEEE - 2019
VITEEE
Physics
Half life
In amplitude modulation, the amplitude of carrier wave is
$A_c$
and that of the modulating signal is
$A_m$
. In practice, the ratio of to
$A_m$
to
$A_c$
is kept less than or equal to one, to avoid
VITEEE - 2019
VITEEE
Physics
communication systems
Consider a pair of insulating blocks with thermal resistances
$R_1$
and
$R_2$
as shown in the figure. The temperature
$\theta$
at the boundary between the two blocks is
VITEEE - 2019
VITEEE
Physics
thermal properties of matter
The work done by an uniform magnetic field, on a moving charge is
VITEEE - 2019
VITEEE
Physics
Magnetic Field
In Young's double slit experiment, the central point on the screen is
VITEEE - 2019
VITEEE
Physics
wave interference
Two thin lenses are in contact and the focal length of the combination is $80\, cm$. If the focal length of one lens is $20 \,cm$, then the power of the other lens will be
VITEEE - 2019
VITEEE
Physics
spherical lenses
The Young?? modulus of a perfectly rigid body is
VITEEE - 2019
VITEEE
Physics
elastic moduli
A person swims in a river aiming to reach exactly on the opposite point on the bank of a river. His speed of swimming is
$0.5\, m/s$
at an angle of
$120^?$
with the direction of flow of water. The speed of water is
VITEEE - 2019
VITEEE
Physics
Motion in a plane
A mass of
$0.5\, kg$
moving with a speed of
$1.5\, m/ s$
on a horizontal smooth surface, collides with a nearly weightless spring of force constant
$k = 50\, N/m$
. The maximum compression of the spring would be
VITEEE - 2019
VITEEE
Physics
Conservation of energy
If the differential equation for a simple harmonic motion is $\frac{d^{2}y}{dt^{2}}+2y=0,$ the time-period of the motion is
VITEEE - 2019
VITEEE
Physics
simple harmonic motion
An electric dipole is kept in a uniform electric field. It experiences
VITEEE - 2019
VITEEE
Physics
Electric Dipole
A rain drop of radius
$0.3\, mm$
has a terminal velocity in air is
$1\, m/s$
. The viscosity of air is
$8 \times 10^{-5}$
poise. The viscous force on it is
VITEEE - 2019
VITEEE
Physics
Viscosity
A hollow sphere and a solid sphere, of equal mass and equal radii roll down without slipping on an inclined plane. If the torque experienced by the hollow sphere and solid sphere are
$\tau_H$
and
$\tau_S$
respectively, then
VITEEE - 2019
VITEEE
Physics
torque
The magnetic field at a distance r from a long wire carrying current i is 0.4 tesla. The magnetic field at a distance 2r is
VITEEE - 2019
VITEEE
Physics
Magnetic Field
A metal ring is held horizontally and bar magnet is dropped through the ring with its length along the axis of the ring. The acceleration of the falling magnet
VITEEE - 2019
VITEEE
Physics
Lenz law
A metallic sphere is placed in a uniform electric field. The line of force follow the path (s) shown in the figure as
VITEEE - 2018
VITEEE
Physics
Electrostatic potential
Consider the junction diode is ideal. The value of current flowing through AB is:
VITEEE - 2018
VITEEE
Physics
Semiconductors
A metal disc of radius 100 cm is rotated at a constant angular speed of 60 rad/s in a plane at right angles to an external field of magnetic induction 0.5 Wb/m\(^2\). The emf induced between the centre and a point on the rim will be:
VITEEE - 2018
VITEEE
Physics
Electromagnetic induction
A body cools from 50.0°C to 49.9°C in 5s. How long will it take to cool from 40.0°C to 39.9°C? Assume the temperature of surroundings to be 30.0°C and Newton’s law of cooling to be valid:
VITEEE - 2018
VITEEE
Physics
Thermodynamics
A running man has half the kinetic energy of that of a boy of half his mass. The man speeds up by 1m/s so as to have same K.E. as that of the boy. The original speed of the man will be:
VITEEE - 2018
VITEEE
Physics
Mechanics
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