Give two practical illustrations of surface tension.
(N/A) Surface tension is a property of liquids where the surface acts like a stretched elastic membrane. Two practical illustrations are:
$1$. Raindrops are spherical: Due to surface tension,the surface area of a liquid drop tends to be minimum for a given volume. For a given volume,a sphere has the minimum surface area,hence raindrops are spherical.
$2$. Cleaning action of detergents: Detergents reduce the surface tension of water,allowing it to penetrate into the pores of fabrics and effectively remove dirt and grease.
$1$. Raindrops are spherical: Due to surface tension,the surface area of a liquid drop tends to be minimum for a given volume. For a given volume,a sphere has the minimum surface area,hence raindrops are spherical.
$2$. Cleaning action of detergents: Detergents reduce the surface tension of water,allowing it to penetrate into the pores of fabrics and effectively remove dirt and grease.
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