Department of Pre-University Education, KarnatakaPUC Karnataka Science Class 11
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Water and Mercury Are Filled in Two Cylindrical Vessels up to Same Height. Both Vessels Have a Hole in the Wall Near the Bottom. - Physics


Water and mercury are filled in two cylindrical vessels up to same height. Both vessels have a hole in the wall near the bottom. The velocity of water and mercury coming out of the holes are v1 and v2 respectively.


  • v1 = v2

  •  v1 = 13.6 v2

  • v1 = v2/13.6

  • \[\text{v}_1 = \sqrt{13 . 6} \text{v}_2\]


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v1 = v2

The velocity of efflux does not depend on the density of the liquid. It only depends on the height h (given same in the question) and acceleration due to gravity g (constant value here).
v1 = v2 = v = `sqrt(2"gh")` 

Concept: Torricelli'S Law
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HC Verma Class 11, 12 Concepts of Physics 1
Chapter 13 Fluid Mechanics
MCQ | Q 21 | Page 272
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