Question # 1

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

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Dioptre

Volt

Ampere

Watt

waves whose speed is equal to speed of light are:

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X-rays

sound rays

electromagnetic waves

shock waves

The distance between two consecutive compressions or rarefactions in longitudinal waves is called:

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Amplitude

Wavelength

Half wavelength

1/4 wavelength

Release of the energy by the sun is due to:

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Nuclear Fussion

Nuclear Fission

Burning of gases

Chemical reaction

Number of poles in a magnet is:

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One

Two

Three

Unlimited

Floppy has a storage capacity

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4-5 MB

3-4 MB

1-3 MB

3-6 MB

If the distance between two point charges is reduced to half, the coulomb’s force become:

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Half

Two times

One fourth

Fourth times

the unit of frequency is:

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hertz

vibration per second

cycle per second

all a, b and c

The distance of the object from the mirror is represented by :

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q

p

m

F

Which statement is true about the magnetic poles?

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Unlike poles repel

Like poles attract

Magnetic poles do not effect each other

A single magnetic pole does not exist

The open switch Boolean expression is represented by:

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0

1

10

2

The resistance of voltmeter is:

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zero

low

Very high

10Ω

The force on a current carrying conductor is maximum if angle between field and conductor is:

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0^o

90^o

180^o

45^o

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