A siphon in use is demonstrated in the following figure. The density of the liquid flowing in siphon is $ 1.5 gm/cc. $ The pressure difference between the point $P$ and $S$ will be
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(c)As the both points are at the surface of liquid and these points are in the open atmosphere. So both point possess similar pressure and equal to $1 atm.$ Hence the pressure difference will be zero.
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