Question # 1

The magnetic force is simply a

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Reflecting force

Deflecting force

Restoring force

Gravitational force

Law of increase of entropy is a result of

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First law of thermodynamics

Second law of thermodynamics

Third law of thermodynamics

Zeroth law of thermodynamics

Which one the following is not a component of a Bipolar junction Transistor

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Base

Emitter

Collector

Grid

A mercury thermometer has

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Low conductivity and low thermal capacity

High conductivity and high thermal capacity

Low conductivity and high thermal capacity

High conductivity and high thermal capacity

Which of the following refers to the distance from crest to crest of a wave.

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Frequency

Wavelength

Amplitude

Period

For an electron or position the rest mass energy is equal to.

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0.21 MeV

0.51 MeV

1.51 MeV

1.21 MeV

An ammeter can be converted into a voltmeter by connecting a

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Low resistance i series

High resistance in series

High resistance in parallel

Low resistance in parallel

Huygen's concept of secondary waves.

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Allow us to find the focal length of a thick lens

Is a geometrical method to find a wave front.

Is used to determine the velocity of light

Is used to explain polarization

A spectroscope sorts out

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Atoms

Molecules

Elements

Isotopes

Which of the following is a method of energy transfer.

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Conduction

Wave motion

Radiation

All of these

If two non zero vectors are perpendicular to each other then their scalar product is equal to.

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-1

1

0

Infinity

Magnetic fields do not interact with

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Stationary electric charges

Stationary permanent magnets

Moving electric charges

Moving permanent magnets

Two lenses of focal length 'f' are combined the resultant focal length is

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f

2f

f/2

zero

the gain of an amplifier is independent of

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The two externally connected resistances

What is happening inside the amplifier

Internal structure of the amplifier

All of the above

In rotational motion, the analogue of force is.

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moment of inertia

Moment of force

Torque

Rotational inertia

Which part of D.C motor reverses the direction of current through the coil every half cycle.

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The armature

The commutator

the brushes

The slips rings

Though the wavelength of X-rays is smaller than that of visible light yet the speed of X-rays in vacuum is.

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longer that that of visible light

Smaller than that of visible light

Same as that of visible light

Unpredictable

The first super conductor was discovered by

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Faraday

Lenz

Kamaerlingh Ornes

Oersted

A magnet is pushed horizontally towards a coil of insulated wire inducting an emf in the coilin which direction does the coil try to move.

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Downwards

Upwards

Away from the magnet

Towards the magnet

The sound waves used sonography are

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Less than 20 KHz

of 20 Khz

Greater than 20 KHz

Of 20 MHz

What units are used to rate electrical fuses.

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Volts

Ampere

Watts

Hertz

Which of the following phenomenon occurs when two sound waves of equal amplitude and different frequencies travel through the same region.

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Doppler's effect

Resonance

Beats

Echo

Current per unit area is called.

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Electric potential

Current density

Charge density

Electric intensity

Which is the health care profession concerned with eyes as well as vision visual system and vision information processing in humans.

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Optometry

Ophthalmology

Telemetry

Psychology

Which of the following is electromagnetic wave.

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X rays

Micro waves

Light

All of these

The electromagnetic waves propagated outing space from antenna of a transmitter are known as.

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Infrared waves

Light waves

Radio waves

X-rays

On which of the following parameters capacitance does not depend upon.

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Area of the plates

Medium between the plates

Distance between the plates

Nature of material for plates

What will be excitation energy in the third orbit of hydrogen atom.

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0.66 eV

0.85 eV

1.5 eV

5.4 eV

Vectors are ofhen spilt into two or more orthogonal components what is true of these components.

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they are perpendicular

They are parallel

They are antiparallel

They have same magnitude

Max. Planck was awarded Nobel prize in.

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1916

1918

1921

1923

Gases exert pressure on walls of the vessels because gas molecules.

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Possess momentum

Have finite volume

Collide with each other

Obey gas laws

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