railway RRB JE (CBT I + CBT II) Mock Test 2024 Fluid Mechanics Fluid Kinematics

Oil is flowing in a pipe of 30 cm diameter with a velocity of 2 m/s. At another section of the pipe, the diameter is 20 cm. What will be the velocity of flow at that section?

1
3 m/s
2
7.5 m/s
3
4.5 m/s
4
6 m/s
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