Question

Please help me out...

Answer 1

we know that rate of flow will always be constant ie

AV=constant

where A=area

V=velocity

A1V1+A2V2=AV

V'=new velocity

(d1/2)^2*V1 + (d2/2)^2*V2=(2d/2)^2*V'

(i havent written pi cause i am lazy)

(V1+V2)/4=V'

Answer 2

Explanation:

option c is the correct answer