24. Two soap bubbles of radii
r1 and r2 equal to 4 cm and 5 cm are touching each other over a common surface s1s2 (shown in figure). Its radius will be
(a) 4 cm
(b) 20 cm
(c) 5 cm
(d) 4.5 cm
Ans. b
(11)
5/5 - (2 votes)
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(a) – 5 J (b) – 10 J (c) – 15 J (d) – 20 J Answer-a (118)
(a) 34 J (b) 70 J (c) 84 J (d) 134 J Answer-d (202)