Physics
Which of the following uses a Non Renewable Energy Source?

Wind Mill Power Plant
Hydro Electric Plant
Nuclear Power Plant
Tidal Power Plant

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Physics
The blue colour of sky is due to

Scattering of shorter wavelengths of sunlight in the atmosphere
Refraction of sunlight
Scattering of longer wavelengths of sunlight in the atmosphere
Reflection of sunlight

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Physics
To prevent damage from lightning, lightning conductors are used on tall structures. The lightning conductor

Should be made of a good conductor like copper with sharp-pointed edges
Should be in the form of a vertical rod
Can be of any shape
Should be made of a good conductor but can be of any shape

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