Question # 1

According to Coulomb's law , what happens to the attraction of two oppositely charged objects as their distance of separation increases?

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Increase

Decreased

remain unchanged

can not be determined

The speed of sound was accurately measured in:

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1736

1737

1738

1739

Which frequency is used by elephants to communicate with each other:

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Zero frequency

Low frequency

Medium frequency

High frequency

The technique or method used to absorb undesirable sounds by soft and porous surface is called:

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Ultrasonic

Acoustic protection

Infrasonics

Echo

Ultrasound waves carry energy:

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Less

More

Equal

None of these

Who developed the 1st practical electric battery:

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Alessandro volta

Faraday

Newton

None of these

Mice can hear frequencies upto:

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100, 000 Hz

25.000 Hz

120,000 Hz

1,000 Hz

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

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 pitch of a sound is most closely related to its:

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Wave form

Period

Amplitude

Frequency

SI unit of electric potential is:

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Watt

Volt

Coulomb

Joule

NOT gate is also called:

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Converter

Inverter

Transmitter

Receiver

1 Pico Farad is equal to:

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10^-9F

10^-12F

10¹²F

10^-6F

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

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