Question # 1

Evaporation takes place from liquid :

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Everywhere

Above surface only

Below surface only

Middle of liquid

Land and Sea breezes are the results of:

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Conduction

Convection

Radiation

Conduction and Radiation

The value of g at a height one Earth's radius above the surface of the

Earth is:

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2 g

1/2 g

1/3 g1

1/4 g

When a body is lifted through height h, the work done on it appears in the form of its

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Kinetic energy

Potential eneger

Elastic potential energy

Geothermal energy

Mercury is used as thermometric material because it has

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Uniform thermal expansion

Low freezing point

Small heat capacity

All the above properties

States of equilibrium are:

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2

3

4

5

Metals are good conductors of heat due to :

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Free electrons

Big size of molecules

Small size of molecules

None of these

Example of bad conductor is:

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Wool

Iron

Graphite

Gold

More radiation is reflected by the surface:

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White

Coloured

Black

Rough

Einstein's mass-energy equation relation is:

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E =1/2 mc²

E =mc²

E =m²c

E = 2 mc²

At sea level height if mercury is:

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1000 cm

10 cm

1m

76 cm

The screen of a cathode ray tube consists of a thin layer of:

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Sodium

Nitrogen

Oxygen

Phosphorus

Which of the following is an example of simple harmonic motion ?

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Motion of the simple pendulum

The motion of ceiling fan

The spining of the Earth on its axis

A bouncing ball on a floor

When did Michael Faraday discover Electromagnetic induction?

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1841

1831

1821

1811

Angle opposite to the base of triangle of prism is called:

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angle of incidence

angle of refraction

angle of prism

emerging angle

In fixed capacitor dielectric used is:

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Paper

Metal

Mica

Paper & mica

If current is flowing from bottom end to the top end in a wire, according to right hand rule the direction of line of forces would be:

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Anti-clock wise

Clock wise

Left and Right

Along the conductor.

The device which converts digital quantities into analog quantities is called:

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ADC

DAC

ACD

CAD

Diffraction of wave can be observed clearly only when the size of slit or obstacle is nearly__________ to the wavelength of the wave:

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Two times

Equal

Four times

None of these

The time period of frequency and time period is equal to:

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v

1

0

λ

The output of a NAND gate is 0 when

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Both of its inputs are 0

Both of its inputs are 1

any of its inputs is 0

any of its inputs is 1

From which of the following we can get information almost about everything:

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Book

Teacher

Computer

Internet

The curve representing an adiabatic process is called.

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An adiabatic

An isotherm

Both of these

None of these

Weight of a 60 kg man in moving elevator with constant acceleration of 1/2 f

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Zero

300 N

600 N

200 N

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Unit vector

+ve of a vector

Resultant vector

-ve of a vector

The value of solar constant.

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1.4 kW m-2

1.0 kW m-2

1.6 kW m-2

2 kw m-2

The largest satellite system is managed by

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116 countries

126 countries

136 countries

140 countries

A ray of light is a line

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Parallel to wave front

Normal to wave front

Anti-parallel to wave

Any one of these

The mass of an object is quantitative measure 0 its

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Momentum

Acceleration

Inertia

Energy

The distinguish between transverse and longitudinal wave_______ is used.

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Refraction

Interference

Diffraction

polarization

Oscillation of shock absorber of a car is practical example of.

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simple harmonic motion

Forced oscillation

Damped oscillation

Undamped oscillation

The force and torque are analogous to

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Velocity

Mass and weight

Moment of Inertia

Each other

If a convex lens is used as a magnifying glass, whcih lens will give higher magnification that has.

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Short size

Long focal length

Large size

Short focal length

Energy density in an inductor is.

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Directly proportional to magnetic field

Directly proportional to square of magnetic field

Inversely proportional to magnetic field

Inversely proportional to square of magnetic field

The electric field created by positive charge is

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Radially inward

Zero

Circular

Radially outward

106 electrons are moving through a wire per second the current developed is:

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1.6 x 10-19 A

1 A

1.6 x 10-13A

106 A

Force per unit charge is called:

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Gravitational force

Electric field intensity

Coulomb's force

None of these

In 1905, the special theory of relativity was proposed by

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Einstein

Bohr

Maxwell

De Broglie

The converses of annihilation of matter is:

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Photoelectric effect

Relativistic effect

Pair production

Compton effect

For Holography we use

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X ray

Laser

gama rays

Beta rays

If the length and number of turns of a solenoid are doubled strength of magnetic field with.

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Be doubled

Become half

Not change

Be four time

One henry is equal to

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1 ohm x 1 sec

1 ohm x 1 hertz

1 ohm x 1 metre

All of above

The electric field lines are closer where the field is

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Strong

Weak

Uniform

Variable

Lenz's law is a consequence of the law of conservation of

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Charge

Momentum

Energy

Angular momentum