Question # 1

Which is not a hardware:

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CPU

Window

Keyboard

Mouse

which can be used to distinguish between insulators and conductors:

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electricity

telescope

temperature

electroscope

the power of washing machine is:

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700 W

750 W

650 W

800 W

The water waves after striking the hurdle will:

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Reflect

Refract

Diffract

All a , b, c

1 MB = ________________ Kilobytes

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1022

1023

1024

1025

Old people can not hear sound above then _____ Hz

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1000

15000

20000

10000

The value of refractive index of water is:

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2.33

1.36

1.33

1.39

The speed of sound in air at 0 ^oC is:

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331 ms^-1

332 ms^-1

333 ms^-1

336 ms^-1

What is the direction of the magnetic field lines inside a bar magnet?

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From north pole to south pole

From south pole to north pole

From side to side

There are no magnetic field lines.

Which wire has lowest resistance?

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Thick wire

Thin wire

Very thin wire

All

Concave mirror formula is given by:

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R = 2r

sin<i/sin<r

1/f=1/p+1/q

1/f=1/p-1/q

A paper capacitor is usually available in the form of:

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Tubes

Rolled foil

Disc

Plates

The point through which rays of light pass after reflection from concave mirror is called principal:

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Focus

Circle

Axis

Radius

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