Question # 1

When an electric current passes through a conductor, which field is produced around it?

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Electric field

Magnetic field

Gravitational field

Electrostatic field

To hear echoes, the minimum distance of the obstacle from source of sound should be:

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10 m

15 m

17 m

20 m

Which wire has lowest resistance?

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Thick wire

Thin wire

Very thin wire

All

The parts of computer which can be seen and touched are called:

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Hardware

Software

Modem

CPU

Which of the following is an example of simple harmonic motion ?

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Motion of the simple pendulum

The motion of ceiling fan

The spining of the Earth on its axis

A bouncing ball on a floor

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 example of shock absorber of the vehicles are:

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Simple harmonic motion

Vibratory motion

Damped motion

Linear motion

If the distance between two point charges is reduced to half, the coulomb’s force become:

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Half

Two times

One fourth

Fourth times

Bats can hear sound of frequency up to:

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100,000Hz

25000Hz

120, 000Hz

1000Hz

The time required to complete one round trip (vibration) abut mena position is called:

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Time period

Freqency

Amplitude

None of these

Battery converts chemical energy into which energy:

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Mechanical

Electrical

Thermal

None of these

A digital multimeter is used to measure:

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Current

Resistance

Potential difference

All of above

If a neutral body is brought near to the electroscope its leaves:

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Diverge

Contract

Shut

Remain in normal position

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