A submarine has a window of area $30 \times 30 \,cm ^2$ on its ceiling and is at a depth of $100 \,m$ below sea level in a sea. If the pressure inside the submarine is maintained at the sea-level atmosphere pressure, then the force acting on the window is ............. $N$ (consider density of sea water $=1.03 \times 10^3 \,kg / m ^3$, acceleration due to gravity $=10 \,m / s ^2$ )
KVPY 2020, Medium
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