AP EAMCET Engineering 18 Sep 2020 Shift 2 Paper

Diameter of first pipe, d1=2cm
∴ Radius, r1=1cm=10−2cm
Diameter of second pipe d2=4cm
∴‌‌r2=2cm=2×10−2m
If v1 and v2 are the velocities of water in first and second pipe respectively, then according to principle of continuity,
A1v1=A2v2⇒πr12v1=πr22v2
⇒‌‌v2=‌

v1

4

⇒v1=4v2