Question # 1

In which of the following state molecules don not leave their position?

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Solid

Liquid

Gas

Plasma

On heating the strip, ___________ expands more than_______

respectively.

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Brass, Iron

Iron, Brass

Copper, brass

Brass, copper

The energy released int he form of nuclear radiations in addition to heat and light is called:

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Mechanical energy

Gravitational energy

Chemical energy

Nuclear energy

If there is no change in state of motion, then the body is said be i:

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Rest

Motion

Equilibrium

Rest & motion

According to Archimedes, upthrust is equal to

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Weight of displaced liquid

Volume of displaced liquid

Mass of displaced liquid

None of these

Land and Sea breezes are the results of:

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Conduction

Convection

Radiation

Conduction and radiation

1 nm have meters.

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10^-3 m

10^-6 m

10^-9 m

10^-10m

A body OF mass 10 kg taken to height of 5m:

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P.E = 500 J

P.E = 50 J

P.E = 5 J

P.E = 5000 J

The ability of a body to do work is known as

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power

energy

kinetic energy

potential energy

If heat Q flows in time 't' through some metal then rate of flow of heat is defined as

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Flow of heat = 2Qt

Flow of heat = Q/t

Flow of heat = t/Q

Flow of heat = Qt

ΣF=0 is __________ condition of equilibrium:

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1st

2nd

Unstable

Stable

Which of the following characteristic of a wave is independent of the others .

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speed

frequency

amplitude

wavelength

A data storage device is:

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Printer

Hard disk

Monitor

CPU

The critical angle for a beam of light passing from water into air is 48.8 degrees. This mean that all light rays with an angle of incidence greater than this angle will be:

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Absorbed

Totallly reflected

Partially reflected and partially transmitted

Totally transmitted

Focal length for concave mirror is :

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-ve

+ve

same

none of these

One micro coulomb charge is equal to:

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10^-3c

10³c

10⁶c

10^-6c

Transformer works on _______ supply.

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A.C

D.C

Battery

Both A and B

When did Michael Faraday discover Electromagnetic induction?

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1841

1831

1821

1811

NOT gate is also called:

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Converter

Inverter

Transmitter

Receiver

The value of acceleration in simple harmonic motion at mean position is

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Maximum

Zero

10 N

Both a , b

The way of doing business by using web is called:

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Sources of entertainment

Web business

E-commerce

E-mail

Which device is used to show the change in the value of current or electrical potential as a graph?

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Cathode ray tube

Electron gun

Oscilloscope

Transformer

The velocity of an oscillating charge as it moves to and fro along a wire is.

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Changing

Constant

Infinite

zero

The sum of positive and negative peak value called.

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R.M.S. value

P-P value

Peak value

Average value

Shunt resistance is

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Low resistance

Zero resistance

High resistance

Impedance

Most of the electrons in the base of an NPN transistor flow:

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Out of the base lead

Into the collector

Into the emit

Into the base supply

X- ray diffraction reveals that these are

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Particle type

Wave type

Both wave and particle

None of above

The negative of the potential gradient is

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Electrostatic force

Electromotive force

Potential difference

Electric field intensity

Recently superconductor discovered is at temperature.

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110K

143K

16.3K

119K

The moderator used in a nuclear reactor

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Sodium

Uranium

Graphite

Cadmium

In a certain circuit, I_{B = 40 µA,}I_C= 20 mA

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450 amp

0.45 amp

5 m amp

500 amp

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Lenz's law

Faraday's law

Ampere's law

None of these

A real transformer does not change.

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Voltage level

Current level

Power level

Frequency

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