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JEE Main 22-Jan-2025 Paper - Shift 2 — JEE STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceJEEJEE Main 22-Jan-2025 Paper - Shift 24 Marks
MCQ
Image
The tube of length L is shown in the figure. The radius of cross section at the point (1) is 2 cm and at the point (2) is 1 cm, respectively. If the velocity of water entering at point (1) is $2 m / s$, then velocity of water leaving the point (2) will be :
  • A
    $2 m / s$
  • B
    $4 m / s$
  • C
    $6 m / s$
  • ✓
    $8 m / s$
✓

Answer

Correct option: D.
$8 m / s$
(D) $8 m / s$
Sol.
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$\begin{array}{l}A_1 V_1=A_2 V_2 \Rightarrow 2 \pi(2 R)^2=V_2 \pi R^2 \\ \therefore V_2=8 m / s \end{array}$

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