Question # 1

In CC configuration voltage gain is.

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Less than one

More than one

One

Zero

Which is the heat transfer mode between an object and its environment due to circular fluid motion.

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Conduction

Convection

Radiation

Mass transfer

In order to measure the true emf of an electrolytic cell it is necessary that.

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The measurement be made while charging the cell

No current be drawn from the cell

The cell be connected into a type circuit

The cell be connected into a parallel type circuit

The immediate cause of alternating currrent in the secondary coil of a transformer is

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A changing electric field

a changing magnetic field

The motion of primary coil

The iron core of the trnasformer

A body attached to a spring is pulled to a distance of 20 cm If the value of spring constant is 48 N m-1, the amount of force applied will be.

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4.8 N

9.6 N

96 N

192 N

If the average velocity of an object zero in some time interval, the displacement of the object for that interval will be.

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Infinite

Zero

Increasing

Decreasing

A substance which has empty conduction band.

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Insulator

Conductor

Semi conductor

super conductor

On which parameter the path difference between two interfering waves depends upon.

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Amplitude

Pitch

Intensity

Phase angle

The process by which nuclei emit a ,b and gama rays in order to attain stability is called.

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Radioactive disintegration

Radio activity

B decay

Radioactive transmulation

Wave motion in air consist of

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Longitudinal waves

Transverse waves

Seismic waves

Polarized waves

The process of mixing sound waves with carrier waves is known as.

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Rectification

amplification

Modulation

Demodulation

Prince Louis and Vector de broglie received the Nobel prize in.

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1919

1923

1927

1929

Neil Bohr made his three postulates in.

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1897

1905

1913

1921

When a current of 2 A flows for 5 s through a lamp 120 W of power are used How much charge flows through the lamp.

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10 C

12 C

24 C

60 C

The specific heat capacity of a substance is the amount of heat required to.

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Raise its temperature by 1 K

Raise the temperature of 1 kg of the substance by 1 K

Melt 1 kg of the substance

Boil 1 kg of the substance

What is the voltage a 6 Mega resistor when 3 A of current passes through it.

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2 V

9 V

18 V

36 V

Entropy of universe is increasing day by da due to.

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Power generating processes

Energy used into work

Depletion of ozone

All of the above

A generator produces 100 kW of power of a potential difference of 10 kV the power is transmitted through cables of total resistance 5 Homs How much power is dissipated in the cables.

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50 W

250 W

500 W

5,000 W

LASER is a device which can produce.

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Monochromatic beam of light

Coherent beam of light

An intense beam of light

All of the above

What is the power factors of wattles current.

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Infinity

Unity

0.5

Zero

When the deforming force applied on a body produces change in volume then it is said to be

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Tensile stress

Compression stress

Shear stress

Shear modulus

The process of getting energy by direct combusting method from the waste products is commonly known as.

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Solid waste

Depletion region

Green house

Fregmentation

The energy in electron volts necessary to remove the most loosely bound electron from the neutral atom is known as.

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Faraday energy

Wave number

Ionization Potential

Excitation potential

A straight wire carrying current will experience a force when place in uniform magnetic field if

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The current and field are parallel

The current and field are at an angle

the current and field are parallel in opposite directions

All of the above

Any substance that can flow is a

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Solid

Gas only

liquid only

Fluid

Since selenium becomes conductor in light so it is.

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Photoconductor

Photocell

Thermistor

Photodiode

While passing through the atmosphere total energy is reduced due to.

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scattering

Absorption

Reflection

All of these

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

Which property of waves is independent of the others.

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Amplitude

Velocity

Frequency

Wavelength

The phenomenon of regular refraction of light illustrates taht.

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Light is reflected in one direction only

Light is reflected through a range of different angles

Light is refracted in one direction only

Light is refracted through a range of different angles.

It is possible is distinguish between transvers and longitudinal waves from the property of.

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Refraction

Interference

Diffraction

Polarization

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