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Physics
List of top Physics Questions asked in JIPMER
The wavelength of the energy emitted when electron come from fourth orbit to second orbit in hydrogen is
$ 20,397\text{ }c{{m}^{-1}} $
. The wavelength of energy for the same transition in He+ is :
JIPMER - 2000
JIPMER
Physics
atom structure models
A uniform chain of length L and mass M is lying on a smooth table and one-third of its length is hanging vertically down over the edge of the table. If g is the acceleration due to gravity, the work required to pull the hanging part on to the table is:
JIPMER - 2000
JIPMER
Physics
work
In Youngs double slit experiment, a mica slit of thickness t and refractive index
$ \mu $
is introduced in the ray from the first source
$ {{S}_{1.}} $
. By how much distance the fringes pattern will be displaced?
JIPMER - 2000
JIPMER
Physics
Youngs double slit experiment
The intensity of radiation emitted by the sun has its maximum value at a wavelength of 510 nm and that emitted by the North Star has the maximum value at 350 nm. If these stars behave like black bodies, then the ratio of the surface temperature of the sun and north star is:
JIPMER - 2000
JIPMER
Physics
thermal properties of matter
Monochromatic light is refracted from air into the glass of refractive index $ \mu $ . The ratio of the wavelength of incident and refracted waves is:
JIPMER - 2000
JIPMER
Physics
Waves
A spring 40 mm long is stretched by the application of a force. If 10 N force is required to stretch the spring through 1 mm, then work done in stretching the spring through 40 mm is:
JIPMER - 2000
JIPMER
Physics
work, energy and power
If the pressure amplitude in a sound wave is tripled, then the intensity of sound is increased by a factor of:
JIPMER - 2000
JIPMER
Physics
sound
You are provided three bulbs of 15, 40 and 60 watt. Which of them has lowest resistance:
JIPMER - 2000
JIPMER
Physics
Resistance
When the displacement is half the amplitude the ratio of potential energy to the total energy is:
JIPMER - 2000
JIPMER
Physics
Wave characteristics
When light of wavelength 300 nm falls on a photoelectric emitter, photoelectrons are liberated. For another emitter, however light of 600 nm wavelength is sufficient for creating photoemission. What is the ratio of the work functions of the two emitters:
JIPMER - 2000
JIPMER
Physics
Photoelectric Effect
Two point charges + 3
$ \mu C $
and + 8
$ \mu C $
repel each other with a force of 40 N. If a charge of - 5
$ \mu C $
is added to each of them, then the force between them will become:
JIPMER - 2000
JIPMER
Physics
coulombs law
The dominant mechanisms for motion of charge carriers in forward and reverse biased silicon
$ \text{p-n} $
junctions are:
JIPMER - 2000
JIPMER
Physics
P-N Junction
At constant volume, temperature is increased. Then:
JIPMER - 2000
JIPMER
Physics
Kinetic molecular theory of gases
12. If the binding energy per nucleon in
$ L{{i}^{7}} $
and
$ H{{e}^{4}} $
nuclei are respectively 5.60 MeV and 7.06 MeV, then energy of reaction
$ L{{i}^{7}}+p\xrightarrow{{}}2\,{{\,}_{2}}H{{e}^{4}} $
is:
JIPMER - 2000
JIPMER
Physics
Nuclear physics
A (100 W, 200V) bulb is connected to a to V power supply. The power consumption would be:
JIPMER - 2000
JIPMER
Physics
Power
A 10kg body hangs at rest from a rope wrapped around a cylinder of 0.2 m in diameter. The torque applied about the horizontal axis of the cylinder is:
JIPMER - 1999
JIPMER
Physics
rotational motion
There are two liquid drops of different radii. The excess pressure inside over the outside is:
JIPMER - 1999
JIPMER
Physics
Surface tension
A body is sliding on a smooth inclined plane requires 4 second to reach the bottom starting from rest at the top. How much rime does it take to cover
$ \frac{1}{4} $
the distance starting from rest?
JIPMER - 1999
JIPMER
Physics
Newtons Laws of Motion
A photocell stops emission if it is maintained at 2 V positive potential. The energy of most energetic photoelectron is:
JIPMER - 1999
JIPMER
Physics
Dual nature of matter
A bullet of mass 50 g is fired from a 5 kg gun with a velocity of 1 km/sec. The speed of recoil of the gun is:
JIPMER - 1999
JIPMER
Physics
collision theory
Two spheres made of same substance have diameters in the ratio 1 : 2. Their thermal capacities are in the ratio of:
JIPMER - 1999
JIPMER
Physics
Thermal Expansion
A wire of resistance 12 ohm is in the form of a circle. The resistance between the ends of a diameter is :
JIPMER - 1999
JIPMER
Physics
Resistance
The ammeter A reads 2 A and the voltmeter V reads 20 V. The value of resistance R is:
JIPMER - 1999
JIPMER
Physics
Resistance
Watt per ampere is unit of:
JIPMER - 1999
JIPMER
Physics
Electrostatic potential
Two like magnetic poles of strength 10 and 40 S.I. units are separated by a distance 30cm. The intensity of magnetic field is zero on the line joining them:
JIPMER - 1999
JIPMER
Physics
Magnetic Field
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