14. Hairs of shaving brush cling together when it is removed from water due to
(a) Force of attraction between hair
(b) Surface tension
(c) Viscosity of water
(d) Characteristic property of hairs
Ans. b
(9)
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(a) – 5 J (b) – 10 J (c) – 15 J (d) – 20 J Answer-a (126)