Question # 1

1 volt is equal to:

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JC

JC^-1

JC^-2

JC^-3

The oscillations of a system in the presence of _____________ force are called amp oscillations:

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Resistive force

Attractive force

Both of these

None of these

Hard disk is made of:

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Aluminium

Copper

Iron

Plastic

The minimum value of angle of deviation is called:

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Minimum angle

incident angle

angle of minimum deviation

None of these

At extreme position potential energy of the pendulum is:

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Maximum

Minimum

Both a and b

Zero

A group of instructions or a program which guides hardware to do work is called:

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Hardware

Micro processor

Memory

Software

V²/R=:

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Power

Energy

Voltage

Resistance

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

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Boiling

Evaporation

Conduction

Thermionic emission

Spherical mirrors are used in:

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Medical

Search light

Microscope

All of these

Information storage devices work on the principles of

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Heat

Sound

Light

Magnetism

When you rub a plastic rod against your hair several times and put it near some bits of paper, the pieces of papers are attracted towards it. What does this observation indicate?

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the rod and the paper are oppositely charged

the rod acquires a positive charge

the reod and the paper have the same charges

the rod acquires a negative charge

In electric motor, the brushes are made of:

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Lead

Graphite

Iron

Wood

The S.I unit of potential difference is:

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Ampere

Coulomb

Volt

Watt

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