Question # 1

Under steady state the temperature of a body

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Increase's with time

Decreases with time

Does not charge with time

None of the above

In heavy atims the electrons are assumed to be arranged in.

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Elliptical shells

Inner shells

Concentric shells

Outer shells

The dioptre power of concave lens of 10 cm focal length is.

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0.1 dioptre

1.0 diopter

10 dioptre

-10 dioptre

The coulomb's law is valid for the charges which are.

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Moving and point charges

Moving and non point charges

Stationary and point charges

Stationary and large size charges

Electromotive force is closely related to.

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Inductance

Magnetic flux density

Potential difference

Electric field intensity

The electrons behave as waves, because they can .

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Produce ions in gases

Diffracted by a crystal

Be deflected by electric fields

Be deflected by magnetic fields

The emission of Beta particle from protonium -218 results in the formation of.

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Protactinium -231

Thorium -232

Astatine -218

Radon -222

In which process the passage of an electric current through a conductor releases heat.

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Joule heating

Ohmic heating

resistive heating

All of these

Which of the following is the cause of failure of a lens to form a sharp and district image of a white object.

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Spherical aberration

Chromatic aberration

Distortion

Astigmatism

A system of the equal and opposite point charges separated by a small distance is called.

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A capacitor

A dipole

An iinductor

A di electric

In the fusion process, there are

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Hydrogen isotopes

Helium Isotopes

Carbon isotopes

Oxygen isotopes

What will be the effect on the speed of a Transerv wave in a string. If tension is made 4 times.

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Remains the same

Increase a times

Becomes double

Becomes 3 times

Increase in velocity of sound in air for 1 ^oC rise in temperature is.

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0.61 m s-1

1.61 m s-1

2.00 m s-1

61.0 m s-1

Huygen's principle is used to explain the

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Speed of light

Dispersion of light

Propagation of light

Reflection of light

operation of a LASER depends upon

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Spontaneous emission of radiation

The existence emission of radiation

The existence of atoms in normal state

The existence of atoms in metastable state

The special theory of relativity was presented in .

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1905

1909

1911

1919

The binary equivalent of 25 is

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111001

11001

1001

10101

Waves that have the same direction of vibration as their direction of travel are.

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Longitudinal waves

Transverse wave

Standing waves

hair wave

A body of mass 8 kg moves along a circle of radius 4 m with constant speed of 88 m s-1 The centripetal force on the body is.

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10 N

128 N

48 N

148 N

In which of the following the speed of sound will be maximum under similar conditions.

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N2

O2

CO2

H2

The ration of Universal gas constant and Avogadro's number is called.

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Equilibrium constant

Velocity constant

Boitzmann's constant

Gravitational constant

The force experienced by a unit positive charge at that point placed in an magnetic field is known as.

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Electric field intensity

Electric flux

Electric potential

Electric dipole

The dimensions of strain are.

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[MLT-2]

[ML-1T-2]

[ML-2T-3]

It is a dimensionless quantity

The distance between the optical centre and principal focus is

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Focal plane

Focal length

Optical centre

Principal axis

Maximum number of orders available with a grating is.

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Independent of grating element

Directly proportional to grating element

Inversely proportional to grating element

Directly proportional to wavelength

A unijunction transistor

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Has only one junction

Is a two terminal device

Is fabricated from germanium

Is fabricated fromuranium

The sum of the positive and negative peak values is known as.

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Peak value

Average value

Instantaneous value

Peak to peak value

A wire surrounded by a concentric cylindrical metal shield constitutes a.

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Spherical capacitor

Parallel plate capacitor

Cylindrical capacitor

Cylindrical condenser

Which analysis is employed to convert a complex sound into notes.

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Fourier theorem

Milleman theorem

Lissajoes theorem

Demorgan's law

The magnus effect is equivalent to

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Bernouli's theorem

Archimedes principle

Pascal's law

Blood pressure

Which of the following gives discrete emission spectrum.

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Sun

Candle

Incandescent filament

Mercury vapour lamp

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