Question # 1

The electrostatic force acting on two charges each of 1 C separated by 1m is about .

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9 x 10⁹ N

9 x 10^-9N

9 x 10⁸N

9 x 10^-8N

Capacitance is defined as:

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VC

Q/V

QV

V/Q

One coulomb is equal to charge of ________ electrons.

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6.25 x 10^-19

6.25 x 10¹⁹

6.25 x 10¹⁸

6.25 x 10^-18

1 Pico Farad is equal to:

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10^-9F

10^-12F

10¹²F

10^-6F

If a charged body is brought near a negatively charged electroscope and the leaves of electroscope diverge, then the body is:

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Positively charged

Negatively charged

Neutral

None of these

The SI the unit of charge is:

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Jpi;e

Volt

Coulomb

Watt

The frequency of silent whistle is:

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20,000 Hz – 25000Hz

2000 Hz – 2500Hz

200 KHz – 2000 Hz

25000 KHz

The unit of intensity of sound:

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Wm^-1

Wm^-2

Wm

Wm²

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

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10m

15m

17m

20m

SI unit of capacitance is:

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Joule

Volt

Watt

Farad

Bats can hear sound of frequency up to:

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100,000Hz

25000Hz

120, 000Hz

1000Hz

The basic operations performed by a computer are:

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Arithmetic operations

Non-arithmetic operations

Logical operations

Both a and c

Safe level of noise depends on factors:

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One

Two

Three

Four

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10th Class Physics Chapter 13 Electrostatics English Medium KPK Boards Online Mcqs MCQs With Answers

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