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Question

A spherical ball contracts in volume by 0.02% when subjected to a normal uniform pressure of 100 atm. The bulk modulus of its material is

A
2.02×1010 N/m2
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B
1.01×1011 N/m2
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C
5.05×1010 N/m2
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D
1.01×1010 N/m2
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Solution

The correct option is C 5.05×1010 N/m2
We know, Bulk modulus , K=P×VΔV
where, negative sign indicates decrease in the volume of the ball.
P= Pressure
V= Original volume of spherical ball
ΔV= Change in the volume of spherical ball.
K=100×1.01×105×V0.02×V100=5.05×1010 N/m2

[ 1 atm=1.01×105 Pa or N/m2]

Option C is correct.

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