Question

why does the velocity increase when water flowing in a broader pipe enters a narrow pipe.

Answer 1

since the volume of liquid flowing through a pipe at any cross sectional area is constant the volume of water flowing in boarder pipe = volume  of water flowing in narrow pipe .to make this possible the water flows very fatly so the velocity increases.

Hope this helps you.

Answer 2

Answer:

this is bcoz av= constant

Step-by-step explanation:

as is given by eqn of continuity