Question # 1

A positive electric charge:

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Attracts other positive charge

Repels other positive charge

Attract a neutral charge

Repels a neutral charge

Joule’s law is W=

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IR/t

IRt²

IR²t

I²Rt

The coulomb's law is valid for the charges which are:

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moving and point charges

moving and non-point charges

stationary and pont charges

stationary and large size charges

Circuit breaker works on the principle of:

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Electric current

Magnetism

Electromagnetism

Electrostatics

One byte is equal to:

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7 bits

5 bits

8 bits

9 bits

The product of charge ‘q’ and potential difference is equal to:

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Power

Force

Capacitance

Energy

parallel plate consists of 2 metal plates separated by:

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conductor

insulator

wooden plate

plastic foam

The waves in which particles of the medium vibrate perpendicular to the direction of propagation of waves are called:

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Transverse waves

Longitudinal waves

Electromagnetic waves

None of these

If we double the distance between two charges, then force becomes

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4-times

1/4th

Double

Half

Time period is reciprocal of:

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Frequency

Cycle

Wave-length

Amplitude

The speed of sound in air at 0°C is:

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331ms^-1

376ms^-1

231ms^-1

386ms^-1

In compound microscope, the objective have focal length than eye-piece:

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Smaller

Larger

Equal

Equal and larger

D.C. motor converts.

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Mechanical energy into electrical energy

Mechanical energy into chemical energy

Electrical energy into mechanical energy

Electrical energy into chemical energy

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