Question # 1

A positive electric charge:

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Attracts other positive charge

Repels other positive charge

Attracts a neutral particle

Repels a neutral particle

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

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10m

15m

17m

20m

Frequency of tuning fork depends upon its …………. of prongs:

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Weight

Speed

Mass

Distance

The speed of sound in iron at 25°C is:

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5950 m/sec

5900 m/sec

6950 m/sec

6940 m/sec

Field around a charge in which that charge exerts a force on a point charge brought in that field is called:

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Electric field

Magnetic field

Neutral zone

Point charge

The SI unit of electric field intensity is:

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NC-2

NC-1

Ns

Nm-1

Who developed the 1st practical electric battery:

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Alessandro volta

Faraday

Newton

None of these

At room temperature, electrons cannot escape the metal surface due to ………….. of atomic nucleus:

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Repulsive forces

Attractive forces

Gravitational forces

Electromagnetic forces

The intensity level of whispering is:

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20 dB

30 dB

40 dB

50 dB

Electric field lines of force were first introduced by:

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Ampere

Farady

Fleming

Coulomb

The S.I unit of electric potential is:

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Watt

Joule

Coulomb

Volt

1 bel=

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0.1 dB

10 dB

100 dB

0.01 dB

1 nano farad is equal to:

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1 x 10^-12 F

1 x 10⁹F

1 x 10^-9F

1 x 10^-6F

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Physics 10th Class English Medium Unit 4 Online Test MCQs With Answers

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