A cubical block of side \( 10 \mathrm{~cm} \) floats at the interface of an oil and water as sho...

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A cubical block of side \( 10 \mathrm{~cm} \) floats at the interface of an oil and water as shown in the figure. The density of oil is \( 0.6 \mathrm{~g} \mathrm{~cm}^{-3} \) and the lower face of ice cube is \( 2 \mathrm{~cm} \) below the interface. The pressure above that of the atmosphere at the lower face of the block is
(a) \( 200 \mathrm{~Pa} \)
(b) \( 620 \mathrm{~Pa} \)
(c) \( 900 \mathrm{~Pa} \)
(d) \( 800 \mathrm{~Pa} \)
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