If pressure at half the depth of a lake is equal to \( 2 / 3 \) pressure at the bottom of the la....

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If pressure at half the depth of a lake is equal to \( 2 / 3 \) pressure at the bottom of the lake then what is the
P
depth (in metre) of the lake. (atmospheric pressure \( 1 \times 10^{5} \mathrm{~N} / \mathrm{m}^{2}, \rho_{w}=1000 \mathrm{~kg} / \mathrm{m}^{3} \) )


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