Everyday capillarity: Why oil rises in a lamp wick. Oil rises up a lamp’s cotton wick primarily due to which physical principle in fine capillaries? Choose the correct option.

Q: Everyday capillarity: Why oil rises in a lamp wick. Oil rises up a lamp’s cotton wick primarily due to which physical principle in fine capillaries? Choose the correct option.

Concept In narrow pores, surface tension and adhesion to fibers draw liquid upwards → capillarity. Final Answer Capillary action (surface tension with adhesion)

Difficulty: Easy

Capillary action (surface tension with adhesion)
Convection currents
Electromagnetic induction
Thermal expansion of oil

Correct Answer: Capillary action (surface tension with adhesion)

Explanation:

Concept

In narrow pores, surface tension and adhesion to fibers draw liquid upwards → capillarity.

Final Answer
Capillary action (surface tension with adhesion)

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