Question # 1

J.J Thomson observed deflection of cathode rays in:

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1895

1896

1897

1998

A data storage device is:

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Printer

Hard disk

Monitor

CPU

Bouncing back of light after striking the surface is called:

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Refraction

Reflection

Diffraction

Interference

The device which is used to convert sound waves into electrical signal is called:

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Ear piece

Microphone

Transmission channel

Receiver

Which is the best material for making connecting wires:

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Iron

Copper

Tungsten

Nickel

1 Pico farad is equal to:

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10^-9F

10¹²F

10^-12F

10^-6F

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

The unit of potential difference is:

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Volt

Coulomb

Ampere

Joule

A and B are the two inputs of a NOR gate. Its output would be 1 when:

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A = 1, B = 1

A = 0 , B = 1

A = 1, B = 0

A = 0 , B = 0

The intensity of lawn mover is:

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10^-1 wm^-2

10^-2wm^-2

10^-1wm^-3

10^-3wm^-2

The frequency of silent whistle is:

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20,000 Hz - 25000 Hz

2000 Hz - 25000 Hz

200 Hz - 2000 Hz

25000 Hz

Capacitors that are used in resonant circuits that tune radios to particular frequencies, such circuits are called:

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Series circuits

Filter circuits

Parallel circuits

AC circuits

Which type of image is produced by the converging lens of human eye if it views a distant object:

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Real, erect, same size

Real, inverted, diminished

Virtual, erect, diminished

Virtual, inverted, magnified

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