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Question

The approximate depth of an ocean is 2700m. The compressibility of water is 45.4×1011Pa1 and density of water is 103kg/m3. What fractional compression of water will be obtained at the bottom of the ocean?(Take g=10ms2)

A
1.2×102
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B
1.4×102
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C
0.8×102
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D
1.0×102
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Solution

The correct option is A 1.2×102
compressibility is given as κ=ΔVVΔP
ΔV=κ×ΔP×V
Substituting values ΔP=ρghPa , κ=45×1011Pa1
ΔVV=45×1011×ΔP
ΔVV=45×1011×103×10×2700
ΔVV=1.2×102

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