8. Two capillaries made of same material but of different radii are dipped in a liquid. The rise of liquid in one capillary is 2.2 cm and that in the other is 6.6 cm. The ratio of their radii is
(a) 9 : 1
(b) 1 : 9
(c) 3 : 1
(d) 1 : 3
Ans. c
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(a) – 5 J (b) – 10 J (c) – 15 J (d) – 20 J Answer-a