The mosquito coil we generally see in house hold purposes and heating coils in electrical heater etc are generally which spiral.
|Answer» D. archemedian spiral|
|Explanation: archemedian spiral is a curve traced out by a point moving in such a way that its movement towards or away from the pole is uniform with the increase of the vectorial angle from the starting line. the use of this curve is made in teeth profiles of helical gears, profiles of cam etc.|
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