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
$\frac {aL}{2g}$
$\frac {gL}{2a}$
$\frac {gL}{a}$
$\frac {aL}{g}$
There is a circular tube in a vertical plane. Two liquids which do not mix and of densities $d_1$ and $d_2$ are filled in the tube. Each liquid subtends $90^o$ angle at centre. Radius joining their interface makes an angle $\alpha$ with vertical. Ratio $\frac{{{d_1}}}{{{d_2}}}$ is
The diagram shows a simple mercury barometer.Which of the following does not cause the height of the mercury column to vary ?
What are difficulties arised by using water in a barometer instead of mercury ?
A container of mass $M$ containing liquid of mass $m_0$ is kept on weighing machine. A ball of mass $m$ is released from rest from given position. Then choose correct option just after ball is released
The value of $g $ at a place decreases by $ 2\%.$ The barometric height of mercury