Question # 1

Which technology is used in mobile phone:

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Heat

Radio

Light

Laser

If a neutral body is brought near to the electroscope its leaves:

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Diverge

Contract

Shut

Remain in normal position

SI unit of electric potential is:

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Watt

Volt

Coulomb

Joule

The speed of sound was accurately measured in:

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1736

1737

1738

1739

Which instrument is used to detect current:

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Galvanometer

Voltmeter

Ammeter

Electroscope

The mirror whose inner surface is reflecting is called:

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Concave mirror

Convex mirror

Mirror

Lens

The resistance of conductors is due to:

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Protons

Fixed atoms

Molecules

Neutrons

When a current carrying conductor is placed in magnetic field at right angle to it. The direction of force acting upon it is:

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The same as direction of field

Opposite the direction of field

Makes an angle of 45^owith the current

At right angle to both the field and the current.

a fuse is connected in series with:

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neutral wire

live wire

earth wire

cable wire

The combined resistance of two identical resistors, connected in series is 8Ω. Their combined resistance in a parallel arrangement will be:

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2Ω

4Ω

8Ω

12Ω

Radio waves are:

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Longitudinal waves

Transverse waves

Electromagnetic waves

All of these

Capacitance is defined as:

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VC

Q/V

QV

V/Q

The end of solenoid from which lines of force emerge out is called:

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North pole

South pole

North and south pole

None of these

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