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Physics

Physics
The unit of measurement of noise is

Hertz
Acoustics
Decibel
Amplifier

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Physics
In a diesel engine the high temperature needed to ignite the fuel is achieved by

Using heat from exhaust
Compressing air in the cylinders
The battery
An electrical spark

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Physics
In an optical fibre the signal is transmitted

Due to total internal reflection
In a straight line path
In a curved path
Due to refraction

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Physics
A thin oil film on a water surface appears coloured because of

Interference
Polarization
Reflection
Diffraction

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Physics
The magnitude of current flowing between two end points of a conductor is proportional to the potential difference between them and is called as:

Ohms law
Rault's law
Avogadro's law
Faraday's law

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Physics
How much mechanical work must be done to completely melt 1 gram of ice at 0°C ?

336 J
4.2 J
2268 J
80 J

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MORE MCQ ON Physics

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