Question # 1

The phenomenon of interference comes about because waves obey

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the impulse momentum theorem

An inverse square law of intensity

The principle of reciprocity

The principle of super position

An image formed on the film of camera is

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Real , inverted and diminshed

Virtual, inverted and diminshed

Real upright and diminished

Virtual, upright and idminshed

The bunding energy per nucleon for iron is.

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zero

Maximum

Negative

Minimum

If a wave vibrate 10 times in 1 s with a speed of 10 m s-1 the correct wavelength of the wave is.

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1 m

10 m

20 m

100 m

If Young's experiment is performed in water. which of the following change will occur.

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Fringe width will increases

Fringe width will decreases

Fringe width will remain unchanged

No fringe will be seen

The blooming of the image due to dispersion in lenses is called.

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spherical aberration

Chromatic aberration

Astigmation

Curvature of image field

How many calories of heat are required to evaporate completely 1 g of ice at 0 ^oC

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480 calories

720 calories

940 calories

1170 calories

The radius of first Bohr's orbit for hydrogen atom is.

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0.53 m

0.53 nm

0.053 nm

0.53 mm

Which of the following defines P.E. per unit charge.

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Electric current

Charges

Potential

Electric field

The hyperfine lines in the spectrum relates to

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Stark effect

Zeeman effect

Lande's spliting

Nuclear magnetic spin

Who proposed the thermodynamic scale of temperature.

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Saadi carnot

Lord Kelvin

Sir james dewar

Gabriei fahrenheit

NOR gate is a combination of.

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OR gate and NOT gate

OR gate and AND gate

OR gate and OR gate

NOT gate and AND gate

The magnetic flux density at the centre of a long solenoid is dependent on.

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The number of turns per unit length of the silenced

The volume of the solenoid

The diameter of each turn of the solenoid

All of above

A forward based p-n semiconductor diode is called.

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Photodiode

Photovoltaic cell

Amplifier

Ligh emitted diode

The work done in moving a body from one place to another in a gravitational field is independent of the

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applied force

Force of gravity

Path followed by the body

Force of earth

If a body of mass 'm' was released in a vacuum just above the surface of a planet of mass M and radius R what will be the gravitational acceleration.

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GmM/R

GM/R²

GM/R

GM/2R

The ratio of specific heat capacity to motor heat capacity of a body

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Is a universals cantante

Depends upon the mass of the body

Depends upon the molecular weight of the body

Is dimensionless

Two forces act together on an object the magnitude of their resultant force is minimum when they act at

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0 ^o

45^oC

90^o

180 ^o

The SI unit of momentum is.

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kg m s-2

kg m2 s-2

kg m s-1

kg s-1

The diffraction of light was discovered by

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Newton

Young

Francesco Grimaldi

Hertz

A man in an elevator ascending with an acceleration will feel that his weight.

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Has increased

Has decreased

Remains the same

Vanishes

The law of gravitation was introduced by

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Huygen

Boyle

Newton

Pascal

In an isochoric process.

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Volume changes

Pressure changes

Temperature changes

Volume remains constant

A straight copper wire a moved in a uniform magnetic field such that it cuts the magnetic lines of force then.

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emf will not be induced

emf will beinduced

sometimes emf will be induced and sometimes not

The number of turns iin the coil increases

No entropy change is associated with

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Isothermal process

Adiabatic process

Isochoric process

Isoteric process

With increase in temperature the angle of contact of liquid.

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Increases

Decreases

Becomes zero

First increase then decreases

Which of the following statemtents is worng.

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Charge is quantized

Charge is conserved

There is not field near an isolated charge at rest

A moving charge produces both electric and magnetic field.

Net change in entropy of a system in a Carnot's cycle in

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Positive

Negative

Zero

Infinite

Which one of the following is not true.

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velocity can be negative

velocity is a vector

Speed is a sccalar

Speed can be negative

The closed end of an organ pipe having longitudinal stationary waves in it behaves as

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Antinode

Source of waves

Node

Antinode

Who suggested that energy is radiated or absorbed in discrete packers called quanta.

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Max. Planck

Stefan

Lummer

Boltzmann

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