Question # 1

The process by which electrons are emitted by a hot metal surface is

known as:

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Boiling

Evaportion

Conduction

Thermionic emission

One byte is equal to:

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7 bits

5 bits

8 bits

9 bits

SI unit of electric intensity is:

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Watt

NC^-1

NS^-1

Nm

What does the term e-mail stand for:

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Emergency mail

Electronic mail

Extra mail

External mail

When we double the voltage in a simple electric circuit, we double the:

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Current

Power

Resistance

Both a and b

The rate of flow of charge through any cross-sectional area is called:

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potential difference

Energy

Coulomb

Electric current

Who developed the 1st practical electric battery:

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Alessandro volta

Faraday

Newton

None of these

Shock absorbers in automobiles are one practical application of:

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SHM

Random motion

Damped motion

None of these

1 Nano farad is equal to:

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1X10^-12F

1X10⁹F

1X10^-9F

1X10^-6F

The shape of magnetic lines of force in case of a straight current carrying conductor is:

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Eliptical

Trangular

Rectangular

Circular

Value of ‘k’ depends upon:

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System of unit

Nature of medium

Both a and b

None of these

If the current in a wire which is placed perpendicular to a magnetic field increases, the force on the wire.

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Increases

Decreases

Remains the same

Will be zero

Image formed on a camera is:

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real,invertred, and diminished

virtual, upright and diminshed

virtual, upright and magnified

real, inverted and magnified

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