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Question

Calculate the pressure at a depth of 50 m below sea level.

Given:
Density of sea water = 1024 kg/m3.
And, acceleration due to gravity g=10 m/s2


A

5120Pa

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B

512000Pa

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C

51200Pa

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D

512Pa

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Solution

The correct option is B

512000Pa


The expression of pressure at the bottom of a liquid of height h and density ρ is given by ρgh.
The given values are:
ρ=1024 kg/m3, h=50 m and g=10 m/s2.
Thus, pressure=ρgh=1024×50×10=512000Pa.


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