Question # 1

The unit of spring constnat is:

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m

kg

Nm²

Nm^-1

The unit of power is _________

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Volt

Watt

Joule

Coulomb

The logical operation performed by this gate is:

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AND

NOR

NAND

OR

The symbol of atomic mass number is:

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A

X

N

Z

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

When light passes through a prism it deviates from its original path due to:

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Reflection

Diffraction

Interference

Refraction

The line which passes through pole of the mirror and center of curvature is called principal:

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Axis

Focus

Line

None of these

The difference between the loudness of faintest audible sound and loudness of another sound is called:

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Pitch of sound

Quality of sound

Sound level

Intensity of sound

Nichrome wire is an alloy of:

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Lead and zinc

Silver and copper

Nickel and chromium

Iron and copper

If the potential energy of none coulomb charge is one joule then its potential will be:

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5 volt

2 volt

3 volt

1 volt

A device which has two ways of communication is:

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television

radio

hard disk

mobile phone

The time period of mass attached with a spring can be calculated by:

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T = 2π√L/g

T = 1/T

T =2π√g/L

T = 2π√m/k

As the temperature of a conductor rises, its resistance:

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Increases

Decreases

Does not change

None of these

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