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Physics

Physics
In beta decay what is emitted

Proton
Electron
Neutron
All of these

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Physics
The mercury and sodium street lamps light up because of :

Electron absorption
Atomic emission
Atomic absorption
Electron emission

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Physics
Where do the electrical charges reside in a charged conductor?

Depended upon the nature of the body
Outer surface of the body
Throughout the body
At the core

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Physics
When a piece of stone is immersed in water, it displaces water of equal

Volume
Density
Mass
Specific gravity

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Physics
Which sources produce alternating current (AC)?

Batteries
All of these
Hydro-electric generators
Solar power plants

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Physics
The ordinary and maximum tolerance limit of sound by human being is

60 db to 80 db (decibel)
65 db to 75 db (decibel)
70 db to 85 db (decibel)
50 db to 70 db (decibel)

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