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26. Water is flowing through a tube of non-uniform cross-section ratio of the radius at entry and exit end of the pipe is 3 : 2. Then the ratio of velocities at entry and exit of liquid is

(a)   4 : 9                                     (b)  9 : 4

(c)   8 : 27                                  (d)  1 : 1

Answer-a

(12)

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