At a depth of 20 cm in a liquid of density $1800 kg m^{–3}$, the pressure due to the liquid is p. Another liquid has a density of $1200 kg m^{–3}$.
What is the pressure due to this liquid at a depth of 60 cm?
1 )
$\frac{p}{2}$
2 )
$\frac{3p}{2}$
2p
4 )
3p
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