2. Two water pipes of diameters 2 cm and 4 cm are connected with the main supply line. The velocity of flow of water in the pipe of 2 cm diameter is
(a) 4 times that in the other pipe
(b) 1/4 times that in the other pipe
(c) 2 times that in the other pipe
(d) 1/2 times that in the other pipe
Answer-a
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(a) – 5 J (b) – 10 J (c) – 15 J (d) – 20 J Answer-a