33. Small liquid drops assume spherical shape because
(a) Atmospheric pressure exerts a force on a liquid drop
(b) Volume of a spherical drop is minimum
(c) Gravitational force acts upon the drop
(d) Liquid tends to have the minimum surface area due to surface tension
Ans. (d) Sphere has the minimum surface area for the given volume of the liquid.
(8)
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(a) – 5 J (b) – 10 J (c) – 15 J (d) – 20 J Answer-a (123)