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JEE Main 2022 · 28 Jul · Shift 2, Physics question 3

A pressure-pump has a horizontal tube of cross sectional area 10 cm2^2 for the outflow of water at a speed of 20 m/s. The force exerted on the vertical wall just in front of the tube which stops water horizontally flowing out of the tube, is :

[given: density of water = 1000 kg/m3^3]

Choose one option
Answer and worked solution

Official answer: D

Momentum flux. F=ρAv2=1000×10−3×400=400F=\rho Av^2=1000\times10^{-3}\times400=400 N.

(D)

Topics:Impulse and momentumContinuity equation
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