Question # 1

Old people cannot hear sound above than:

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1000 Hz

15000 Hz

20000 Hz

The cathode ray oscilloscope consists of main parts:

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Two

Three

Four

Five

The quantities, whose values remain constant or vary continuously are called.

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Analogue quantities

Digital quantities

Maximum quantities

Minimum quantities.

Which of the following is a method of energy transfer.

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Conduction

Reatiation

wave motion

all of these

1 bel=

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0.1 dB

10 dB

100 dB

0.01 dB

Bats can hear sound of frequency up to:

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100,000Hz

25000Hz

120, 000Hz

1000Hz

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

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Focal length

Wave length

Frequency

Time period

Typographical errors in BASIC statements are:

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Runtime errors

Logical Errors

Syntax errors

Execution errros

The disturbance travelling in a medium is called:

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Wave motion

Simple harmonic motion

Motion

both a and b

In totally reflecting prism one angle is of 90°, and other two angles are of:

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30°,30°

45°,90°

45°,45°

40°,40°

The mirror whose outer surface is reflecting is called:

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Concave mirror

Convex mirror

Mirror

Lens

Which is not a hardware device?

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CPU

Windows

Keyboard

Mouse

A positive electric charge:

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Attracts other positive charge

Repels other positive charge

Attracts a neutral particle

Repels a neutral particle

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