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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

(4)

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