Physics
In a filament type light bulb most of the electric power consumed appears as

Visible light
Fluorescent light
Ultra-violet rays
Infra-red rays

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

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

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