First slide
Fluid dynamics
Question

Consider the following statements 
(A) The stream of water flowing at high speed from  a garden hose pipe tends to spread like a fountain when held vertically up, but tends to narrow down when held  vertically down.
(B) In any steady flow of an incompressible fluid, the volume flow rate of the fluid remains constant.
Select the correct option.
(a) (A) is false but (B) is true.
(b) Both (A) and (B) are true.
(c ) (A) is true but (B) is false.
(d) Both (A) and (B) are false.

Easy
Solution

Vt= Av =constant for a steady flow as per equation of continuity.

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