First slide

Surface tension and surface energy

Question

The spiders and insects move and run about on the surface of water without sinking because

Moderate

A

Elastic membrane is formed on water due to property of surface tension
B

Spiders and insects are lighter
C

Spiders and insects swim on water
D

Spider and insects experience upthrust

Solution

Weight of spiders or insects can be balanced by vertical component of force due to surface tension.

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