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Thrust & Pressure

A diver is ...

Question

A diver is $20 m$ below the water surface. Given that the density of the water is $1000 k g m^{- 3}$ , what is the pressure exerted by the water on the diver? (Take $g = 10 m s^{- 2}$ )

10, 000 P a

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1, 00, 000 P a

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2, 00, 000 P a

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3, 00, 000 P a

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Solution

The correct option is C $2, 00, 000 P a$
Hydrostatic pressure = $ϱ g h$
= $1000 \frac{k g}{m^{3}} \times \frac{10 m}{{s e c}^{2}} \times 20 m$
= $2 \times 10^{5} P_{a}$ .

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