Bernoulli's principle and equation of continuity

2026 Re-NEET 1 question

1. Water flows in a streamline motion through a horizontal pipe of circular cross-section as shown in the figure. The pressure difference of water between P and Q is 15 Nm$^{-2}$. The area of cross-section at P and Q are 40 cm$^2$ and 20 cm$^2$, respectively. The rate of flow of water through the pipe, in cm$^3$s$^{-1}$, is: [Take density of water = 1000 kg m$^{-3}$]