Question # 1

The basic operations performed by a computer are.

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arithmetic operations

non arithmetic operations

logical operation

both a and c

Coaxial cable are used to transmit signals:

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Magnet

Electric

Mechanical

Both mechanical and magnet

According to coulomb’s law, what happens to the attraction of two oppositely charged objects as their distance of separation increases:

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Increases

Decreases

Remains unchanged

Cannot be determined

What is the voltage across a 6Ω resister when 3A current passes through it?

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2V

9V

18V

36V

Image formed on a camera is:

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Real, inverted, and diminished

Virtual, upright and diminished

Virtual, upright and magnified

Real, inverted and magnified

The unit of electrical energy is:

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Joule

Watt

Volt

Electron volt(eV)

An example of input device computer is:

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Keyboard

printer

monitor

RAM

The distance between two consecutive troughs or crests is called:

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wavelength

Frequency

Time period

None of these

CD which is made of soft material is called:

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Hard disk

Floppy disk

Iron disk

Copper disk

The distance between two consecutive waves compressions or rarefactions is called:

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Focal length

Wave length

Frequency

Time period

Power of electric heater is:

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1500W

4750W

100W

50W

The speed of sound was accurately measured in:

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1736

1737

1738

1739

Electric potential is a quantity:

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Scalar

Vector

Base

All

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