Question # 1

Which of the following characteristics of a wave is independent of the others:

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speed

frequency

amplitude

wavelength

In totally reflecting prism one angle is of:

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45°

90°

180°

120°

The advantages of electronic mail are:

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Fast communication

Cost free service

More efficient

All of these

In computer terminology information means:

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Any data

Raw data

Processed data

Large data

The 1st practical electric battery is known as:

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Voltaic

Pile

Voltaic pile

Voltaic cell

To hear echo, the distance between the observer and the obstacle is 17m then how much distance will the sound travel?

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60m

54m

17m

34m

The principal focus of a concave mirror is:

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Virtual

Real

Imaginary

Dual aspect

LDR can act as:

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Diode

Switch

Transistor

Rectifier

1 KB =______________

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1022 bytes

1023 bytes

1024 bytes

1025 bytes

Which combination forms NAND gate:

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AND & OR

AND & NOT

NOT & OR

NAND & NOT

a fuse is connected in series with:

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neutral wire

live wire

earth wire

cable wire

The unit of resistance is:

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Ω-m

Ω

V

C

The converter of digital to analogue signal is:

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ADC

DAC

DATC

DTC

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