Question # 1

Electric field lines of force were first introduced by:

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Ampere

Farady

Fleming

Coulomb

A positive and negative charges are initially 4 cm apart. When they are moved closer together so that they are now only 1 cm apart, the force between them is:

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4 times smaller than before

4 times larger than before

8 times larger than before

16 times larger than before.

How many tubes or electron guns used in a colour television set:

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Two

Four

Five

Three

The pitch of a sound is most closely related to its:

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Wave form

Period

Amplitude

Frequency

Who developed the 1st practical electric battery:

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Alessandro volta

Faraday

Newton

None of these

SI unit of capacitance is:

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Joule

Volt

Watt

Farad

When frequency of sound wave is increased, which of the following decreases:WavelengthPeriodAmplitude

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(i) Only

(iii) Only

(i) And (ii) only

(i) And (iii) only

The speed of sound in air at 0°C is:

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331ms^-1

376ms^-1

231ms^-1

386ms^-1

Old people cannot hear sound above than:

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1000 Hz

15000 Hz

20000 Hz

Two uncharged objects A and B are rubbed against each other. When object B is placed near a negatively charged object C, the two objects repel each other. Which of these statements is true about object A.

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Remains uncharged

Becomes positively charged

Becomes negatively charged

Unpredicatable

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

1 bel=

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0.1 dB

10 dB

100 dB

0.01 dB

Ultrasound waves carry energy:

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Less

More

Equal

None of these

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

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