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VITEEE
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Physics
List of top Physics Questions asked in VITEEE
The kinetic energy of an electron get tripled then the de-Broglie wavelength associated with it changes by a factor
VITEEE - 2012
VITEEE
Physics
Dual nature of matter
A square loop, carrying a steady current
$I$
, is placed in horizontal plane near a long straight conductor carrying a steady current
$I_{1}$
at a distance
$d$
from the conductor as shown in figure. The loop will experience
VITEEE - 2012
VITEEE
Physics
Current electricity
A nucleus \( _{Z}^A X \) emits an \( \alpha \)-particle. The resultant nucleus emits a \( \beta^- \)-particle. The respective atomic and mass numbers of final nucleus will be:
VITEEE - 2011
VITEEE
Physics
Nuclear physics
Polarising angle for water is \( 53^\circ 4' \). If light is incident at this angle on the surface of water and reflected, the angle of refraction is:
VITEEE - 2011
VITEEE
Physics
Optics
The output voltage of a transformer connected to a 220 V line is 1100 V at 2 A current. Its efficiency is 100%. The current coming from the line is:
VITEEE - 2011
VITEEE
Physics
AC Circuits
An ammeter reads up to 1 A. Its internal resistance is 0.81 \( \Omega \). To increase the range to 10 A, the value of the required shunt is:
VITEEE - 2011
VITEEE
Physics
Current electricity
A 2 V battery, a 15 \( \Omega \) resistor, and a potentiometer of 100 cm length are connected in series. If the resistance of potentiometer wire is 5 \( \Omega \), then the potential gradient of the potentiometer wire is:
VITEEE - 2011
VITEEE
Physics
Current electricity
A coil of resistance 100 \( \Omega \) and inductance 5 H is connected to a 100 V battery. Then the energy stored in the coil is:
VITEEE - 2011
VITEEE
Physics
Electromagnetic induction
In Young's double slit experiment, the intensity of light at a point on the screen where the path difference is \( \lambda \) is:
VITEEE - 2011
VITEEE
Physics
Optics
In an electromagnetic wave, the average energy density associated with magnetic field is:
VITEEE - 2011
VITEEE
Physics
Electromagnetic waves
An electromagnetic wave going through vacuum is described by: \[ E = E_0 \sin(kx - \omega t) \] Which of the following is/are independent of the wavelength?
VITEEE - 2011
VITEEE
Physics
Electromagnetic waves
Five resistances are connected as shown in the figure. The effective resistance between points A and B is:
VITEEE - 2011
VITEEE
Physics
Current electricity
A potentiometer is connected across A and B, and a balance is obtained at 64.0 cm. When potentiometer lead to B is moved to C, a balance is found at 8.0 cm. If the potentiometer is now connected across B and C, a balance will be found at:
VITEEE - 2011
VITEEE
Physics
Current electricity
As shown in the figure, charges \( +q \) and \( -q \) are placed at the vertices B and C of an isosceles triangle. The potential at the vertex A is:
VITEEE - 2011
VITEEE
Physics
Electrostatics
The insulation property of air breaks down at \( 3 \times 10^6 \, \text{V/m} \). The maximum charge that can be given to a sphere of diameter 5 m is nearly:
VITEEE - 2011
VITEEE
Physics
Electrostatics
On moving a charge of \( 20 \, \text{C} \) by \( 2 \, \text{cm} \), 2 J of work is done, then the potential difference between the points is:
VITEEE - 2011
VITEEE
Physics
Electrostatics
The ratio of momentum of an electron and \( \alpha \)-particle which are accelerated from rest by a potential difference of 100 V is:
VITEEE - 2011
VITEEE
Physics
Atomic Models
An electron accelerated under a potential difference \( V \) volt has a certain wavelength \( \lambda \). Mass of proton is some 2000 times the mass of the electron. If the proton has to have the same wavelength \( \lambda \), then it will have to be accelerated under a potential difference of:
VITEEE - 2011
VITEEE
Physics
Electromagnetic waves
What is the age of an ancient wooden piece if it is known that the specific activity of \( C \)-nuclide in it is one-third of that in freshly grown trees? Given that the half-life of \( C \)-nuclide is 5700 years:
VITEEE - 2011
VITEEE
Physics
Nuclear physics
The frequency of an FM transmitter without signal input is:
VITEEE - 2011
VITEEE
Physics
communication systems
Sky wave propagation is used in:
VITEEE - 2011
VITEEE
Physics
communication systems
A thin metallic spherical shell contains a charge \( Q \). A point charge \( q \) is placed at the center of the shell and another charge \( q_1 \) is placed outside it as shown in the figure. All the three charges are positive. The force on the charge at the center is:
VITEEE - 2011
VITEEE
Physics
Electrostatics
The force on the charge at the center is:
VITEEE - 2011
VITEEE
Physics
Electrostatics
In a Millikan’s oil drop experiment, the charge on an oil drop is calculated to be \( 6.35 \times 10^{-19} \, \text{C} \). The number of excess electrons on the drop is:
VITEEE - 2011
VITEEE
Physics
Atomic Models
The values \( +\frac{1}{2} \) and \( -\frac{1}{2} \) of spin quantum number show:
VITEEE - 2011
VITEEE
Physics
Atomic Models
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