24. A shell having a hole of radius r is dipped in water. It holds the water upto a depth of h then the value of r is
(a) r= 2T/hdg
(b) r= T/hdg
(c) r= Tg/hd
(d) None of these
Ans. a
(8)
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(a) – 5 J (b) – 10 J (c) – 15 J (d) – 20 J Answer-a (123)