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Physics

Physics
The unit of measurement of noise is

Decibel
Amplifier
Acoustics
Hertz

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Physics
One bar is equal to

105 Pa
104 Pa
106 Pa
103 Pa

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Physics
A fountain pen works on the principle of

Bernoulli's principle
Flow of liquids from higher to lower potential
Capillary action
Viscosity of liquids

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Physics
In quantum mechanics a particle is represented by a

None of these
Particle
Wave packet
Wave

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Physics
The strength of an electromagnet can be increased by

Increasing current supply
Increasing the length of the coiled wire
Increasing the number of turns
All of these

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Physics
A barometer is kept inside a bell jar. Air is slowly pumped out of the jar.

The mercury level starts rising
The bell jar breaks up
The mercury level does not change
The mercury level starts falling

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