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Question

1m3 water is brought inside the lake upto 200m depth from the surface of the lake. What will be change in the volume when the bulk modulus of elasticity of water is 22000atm?
(density of water is 1×103kg/m3 atmosphere pressure = 105N/m2 and g=10m/s2

A
8.9×103m3
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B
7.8×103m3
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C
9.1×104m3
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D
8.7×104m3
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Solution

The correct option is D 9.1×104m3
K=PΔV/V
ΔV=PVK
P=hρg=200×103×10N/m2
K=22000atm=22000×105N/m2
V = 1m3
ΔV=200×103×10×122000×105=9.1×104m3

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