Question # 1

Who developed the 1st practical electric battery:

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Alessandro volta

Faraday

Newton

None of these

The basic operations performed by a computer are:

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Arithmetic operations

Non-arithmetic operations

Logical operations

Both a and c

The speed of sound was accurately measured in:

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1736

1737

1738

1739

Electric field lines of force were first introduced by:

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Ampere

Farady

Fleming

Coulomb

1 Pico Farad is equal to:

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10^-9F

10^-12F

10¹²F

10^-6F

The speed of sound in air at 0°C is:

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331ms^-1

376ms^-1

231ms^-1

386ms^-1

The S.I unit of electric potential is:

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Watt

Joule

Coulomb

Volt

The unit of electrical energy is:

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Joule

Watt

Volt

Electron volt

Which is the most suitable means of reliable continuous communication between an orbiting satellite and earth:

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Mecrowaves

Radio waves

Sound waves

Any light waves

SI unit of capacitance is:

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Joule

Volt

Watt

Farad

1 volt is equal to:

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JC

JC^-1

JC^-2

JC^-3

Bats can hear sound of frequency up to:

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100,000Hz

25000Hz

120, 000Hz

1000Hz

A positive and negative charges are initially 4 cm apart. When they are moved closer together so that they are now only 1 cm apart, the force between them is:

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4 times smaller than before

4 times larger than before

8 times larger than before

16 times larger than before.

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