Question # 1

by connecting suitable high resistance in series with galvanometer it will convert into:

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voltmeter

galvanometer

ammeter

multimeter

the number of waves passing through a point in one second is called:

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time period

cycle

frequency

amplitude

What is fitted in telephone receiver:

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Electromagnet

Diaphragm

Both a and b

None

The energy is transferred from one place to another:

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Through matter

Thouth waves

both a and b

None of these

The sound level of rustling of leave is:

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1 dB

20 dB

30 dB

10 dB

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

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Zero frequency

Low frequency

Medium frequency

High frequency

Hard disk is made of:

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Aluminium

Copper

Iron

Plastic

The value of K in SI unit is:

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9X10²⁰ Nm²C²

8X10⁹Nm²C²

9X10⁹Nm²C²

10X10^-9 Nm²C^-2

The S.I unit of power of a lens is:

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Dioptre

Volt

Ampere

Watt

Which is not a hardware:

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CPU

Window

Keyboard

Mouse

The unit of potential difference is:

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Volt

Coulomb

Ampere

Joule

The critical angle for a beam of light passing from water into air is 48.8 degrees. This mean that all light rays with an angle of incidence greater than this angle will be:

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Absorbed

Totallly reflected

Partially reflected and partially transmitted

Totally transmitted

The refractive index of ice is:

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1.00

1.33

1.31

2.42

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