Everyday physics: Why blotting paper absorbs ink. The absorption of liquid ink into blotting paper occurs due to which physical effect in porous materials? Choose the correct option.

Q: Everyday physics: Why blotting paper absorbs ink. The absorption of liquid ink into blotting paper occurs due to which physical effect in porous materials? Choose the correct option.

Given data Porous paper absorbs ink spontaneously. Concept In narrow pores, surface tension and adhesion create capillary rise, drawing liquid into the material. Final Answer Capillary action (capillarity)

Difficulty: Easy

Capillary action (capillarity)
Osmosis across fibers
Electrostatic attraction
Viscous drag only

Correct Answer: Capillary action (capillarity)

Explanation:

Given data

Porous paper absorbs ink spontaneously.

Concept
In narrow pores, surface tension and adhesion create capillary rise, drawing liquid into the material.

Final Answer
Capillary action (capillarity)

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