Given, horizontal tube of variable diameter By using equation of continuity Av = constant ...(i) where, A is area of cross-section and v is velocity of fluid through that cross-section. As, p=
F
A
⇒A=
F
p
Substituting in Eq. (i), we get
F
p
.v= constant If force is same. ∴
v
p
= constant If pressure is least, then velocity is highest.
