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Physics

Physics
Which of the following has the highest entropy?

Diamond
Hydrogen
Liquid nitrogen
Mercury

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Physics
The unit of measurement of noise is

Decibel
Amplifier
Hertz
Acoustics

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Physics
An object at rest may have

Velocity
Potential energy
Momentum
Kinetic energy

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Physics
At what temperature (in degree Celsius), the numerical values on Celsius and Fahrenheit scales become equal?

273
–273
–40
40

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Physics
Which of the following is not caused by atmospheric refraction of light ?

Sun appearing higher in the sky than it actually is
Twinkling of stars at night
Sun appearing red at sunset
Sun becoming visible two or three minutes before actual sunrise

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Physics
A copper disc has a hole. If the disc is heated, the size of the hole

Increases
No change
Decreases
First increases and than decreases

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