Question # 1

The SI unit of electric field intensity is:

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NC-2

NC-1

Ns

Nm-1

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

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Wave form

Period

Amplitude

Frequency

Level of noise recommended in eight, hour work day:

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80-90 dB

80-85- dB

85-90 dB

90-95 dB

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

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Zero frequency

Low frequency

Medium frequency

High frequency

An object gains excess negative charge after being rubbed against another object, which is:

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Neutral

Negatively charged

Charged

Either, a,b,and c

Which is used to investigate the properties of electron beam:

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LDR

Electroscope

Proton gun

Electron gun

The intensity level of whispering is:

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20 dB

30 dB

40 dB

50 dB

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 S.I unit of electric potential is:

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Watt

Joule

Coulomb

Volt

The unit of intensity of sound:

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Wm^-1

Wm^-2

Wm

Wm²

The unit of electrical energy is:

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Joule

Watt

Volt

Electron volt

Ultrasound waves carry energy:

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Less

More

Equal

None of these

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

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