Question # 1

Which types of image is produced by the converging lens of human eye if it view a distant object?

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Real , erect, same size

Real, inverted, diminshed

Virtual, erect,diminshed

Virtual, inverted, magnified

Capacitors are mainly used for radio frequency tuning:

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Paper capacitor

Air capacitor

Mica capacitor

Electrolytic capacitor

The way of doing business by using web is called:

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Sources of entertainment

Web business

E-commerce

E-mail

The value of refractive index of water is:

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2.33

1.36

1.33

1.39

Speed of light in air is ms^-1

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3 x 10⁸

3 x 10¹¹

3 x 10⁵

340

Information storage devices work on the principles of

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Heat

Sound

Light

Magnetism

Bouncing back of light after striking the surface is called:

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Refraction

Reflection

Diffraction

Interference

The presence of fish by the other fish can be detected by:

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Magnetic field

Electric field

Gravitational field

All of above

The process by which electrons are emitted by a hot metal surface is known as:

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Boiling

Evaporation

Conduction

Thermionic emission

Simplest electrical circuits use:

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One wire

Two wires

Four wires

Five wires

The amount of current that can be felt is:

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1A

0.1A

0.001 A

2A

The refractive index of internal coating of optical fibre is:

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1.56

1.51

1.53

1.58

A device which has two ways communication is:

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Television

Radio

Hard disk

Mobile phone

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