Physics · PYQ NEET UG 2026

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 \( 15 \text{ Nm}^{-2} \). The area of cross-section at \( P \) and \( Q \) are \( 40 \text{ cm}^2 \) and \( 20 \text{ cm}^2 \), respectively. The rate of flow of water through the pipe, in \( ext{cm}^3\text{s}^{-1} \), is : [Take density of water \( = 1000 \text{ kg m}^{-3} \)]

1. A
   \( 100 \)
2. B
   \( 200 \)
3. C
   \( 300 \)
4. D
   \( 400 \)