42. A tank is filled with water up to a height H. Water is allowed to come out of a hole P in one of the walls at a depth D below the surface of water. Express the horizontal distance x in terms of H and D
(a) x=√D(H-D)
(b) x=√[D(H-D)]/2
(c) x=2√D(H-D)
(d) x=4√D(H-D)
Answer-c
(4)
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(a) – 5 J (b) – 10 J (c) – 15 J (d) – 20 J Answer-a (123)