Question

water is flowing through two horizontal pipes of different radii which are connected together in first pipe speed of water is 4m/s and the pressure is 1.25x10^4 N/m^2 then pressure of water in the second pipe is(radii of these pipes are in the ratio 1:2)

Answer 1

$2 \times {10}^{4}$
apply Bernoulli theorm and use equation of continuity