JEE Main 2026 · 4 Apr · Shift 2 · Physics Q32

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PhysicsSingle correct+4 / -1Question 32 of 75

A water spray gun is attached to a hose of cross sectional area 30 cm². The gun comprises of 10 perforations each of cross sectional area of 15 mm². If the water flows in the hose with the speed of 50 cm/s, calculate the speed at which the water flows out from each perforation. (Neglect any edge effects)

100 m/s

10 m/s

1000 m/s

15\times10^2

m/s

Answer and worked solution

Official answer: B

Continuity. $A_1v_1=10A_2v_2$ :
$30\times10^{-4}(0.5)=10(15\times10^{-6})v\implies v=10\text{ m/s}.$

(B)

Topics:Continuity equation

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JEE Main 2026 · 4 Apr · Shift 2, Physics question 32