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Physics

Physics
The unit of measurement of noise is

Amplifier
Decibel
Acoustics
Hertz

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Physics
"God Particle" is

Meson
Higgs Boson
Positron
Neutrino

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Physics
In a refrigerator what produces the cooling ?

The sudden expansion of a compressed gas
None of these
The evaporation of a volatile liquid
The ice which deposits on the freezer

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Physics
Two metallic wires made from copper have same length but the radius of wire 1 is half of that of wire 2. The resistance of wire 1 is R. If both the wires are joined together in series, the total resistance becomes

3R/4
2R
R/2
5R/4

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Physics
Hertz is a unit for measuring

Frequency of waves
Clarity of waves
Intensity of waves
Wavelength

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Physics
In superconductors, the energy gap is due to

Electron-phonon interaction
Phonon-phonon interaction
Electron-electron interaction
Electron-photon intercation

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