Question # 1

SI unit of temperature is.

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Fahrenheit

Centigrade

Kelvin

All of these

Earth's gravitational force of attraction vanishes at

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6400 km

Infinity

42300 km

1000 km

Absolute zero is equal to

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0 K

273

-273 K

373 K

A couple consists of how many forces:

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1

2

3

4

Forces on doubled arm spanner are called.

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Torque

Couple

Moment of force

Momentum arm

A satellite revolving around very close to Earth has speed nearly:

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8 kms^-1

5 kms^-1

10 kms^-1

100 kms^-1

Hydraulic press in works on:

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Pascal's law

Hook's law

Archimedes law

Principle of floatation

A gradual large increase in atmospheric pressure shows:

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Pleasant condition

Rainy condition

Intense condition

Winday condition

In Einstin's mass energy equation, c is the :

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Speed of sound

Speed of light

Speed if volume

None of these

At the surface of Earth, the acceleration due to gravity 'g' is measured by using the formula

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g = GMe/R

GMe/R2

g = 2GMe/R2

g = GMe/2R

Optical fibers work on the principle of:

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Refraction

Reflection

Total internal reflection

Diffraction

Bouncing back of light after striking the surface is called:

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Refraction

Reflection

Diffraction

Interference

How many possible solutions are there for a prblem?

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One

Two

Three

Multiple

In variable capacitor, dielectric medium is:

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Paper

Air

Mica

Ceramic

What does the term e-mail stand for:

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Emergency mail

Electronic mail

Extra mail

External mail

Sun light consist of ____________ colour

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6

7

5

2

The direction of induced e.m.f. in a circuit is in accordance with conservation of.

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Mass

Charge

Momentum

Energy

The waves in which particles of the medium vibrate perpendicular to the directions waves are:

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Electromagnetic waves

Sound waves

bothe a and b

Transverse waves

The line which passes through pole of the mirror and center of curvature is called principal:

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axis

Focus

Line

None of these

Typographical errors in BASIC statements are:

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Runtime errors

Logical Errors

Syntax errors

Execution errros

For an ideal gas, the internal energy is directly proportional to.

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Pressure

volume

Mass

Temperature

The magnitude of A will be

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Zero

A²

1

A

The horizontal component of velocity of projectile

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Increases

Decreases

Remain same

Decreases and then increases

If the pressure of a gas is doubled, then speed of sound is.

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Doubled

Become half

Not affected

Increases by four times

Apparent weight of a man is in upward accelerated lift will

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Increases

Decreases

Remain same

Increases then decrees

The word Fluid means

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To rise

To fall

To flow

To oppose

Oil film floating on water exhibits colours due to

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Interference

Diffraction

Polarization

All of these

Dot product of vector with itself is.

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Zero

2 A

A²

A

Almost all the raw energy is librated from

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Heat

Earth

Light

All of these

Satellites are the objects that orbit around the

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Moon

Sun

Earth

Star

The device in the circuit that consume electrical energy are known as.

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Dissipaters

Generator

Load

Motors

All motions are

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Absolute

Uniform

Relative

Variable

The electrons in one coulomb change is equal to.

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1.6 x 10^-19

2.25 x 10^-19

6.25 x 10^-18

6.25 x 10^-19

OR gate is represented by:

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X = A+B

X=A.B

X=A+B

X=A.B

The photoelectric effect predicts that light is made of

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Photons

Neutrons

Protons

None of these

Terminal potential difference is greater than emf of the cell when

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Circuit is open

Circuit is closed

small battery is charged by bigger battery

None of these

The drift velocity is of order:

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10^-13m/s

10³ m/s

10^-3m/s

10^-4m/s

The absolute electric potential at a point distance 20 cm from a charge of 2 uC is.

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9 x 10² V

9 x 10³ V

9 x 10⁴ V

9 x 10 ⁵ V

The existence of positron was discovered in:

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1929

1928

1931

1933

A diode characteristics curve is a plot between

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Current and resistance

Voltage and time

Voltage and current

Current and time