Why does the cotton wick in an oil filled lamp keep on burning?

By friction

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By capillary action

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By electrostatic force

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By Gravitational force

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Solution

The correct option is A By capillary action
Due to surface tension of oil capillary rise can be seen in cotton wick which makes lamp to burn.

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Similar questions

Which of the following are non-contact forces?

Magnetic force, Frictional force, Gravitational force, Electrostatic force.

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