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9.1 , fluid mechanics — Physics STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 SciencePhysics9.1 , fluid mechanics1 Mark
MCQ
In a $U-$ tube, the liquid level stands at same level when it is at rest. When $U-$ tube is accelerated towards right, as shown in figure, the difference $h$  between level of two arms will be 
  • A
    $\frac {aL}{2g}$
  • B
    $\frac {gL}{2a}$
  • C
    $\frac {gL}{a}$
  • ✓
    $\frac {aL}{g}$
✓

Answer

Correct option: D.
$\frac {aL}{g}$
d
$\tan \theta=\frac{a}{g}=\frac{h}{L}$

$\therefore \mathrm{h}=\frac{\mathrm{aL}}{\mathrm{g}}$

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