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Q.

A spherical ball of volume 1000 cm3 is subjected to a pressure of 10 atmosphere. The change in volume is 10–2cm3. If the ball is made of iron find its bulk modulus. (Atmospheric pressure =1×105Nm–2)

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a

1 × 1011 N/m2

b

2 × 1011 N/m2 

c

3 × 1011 N/m2

d

4 × 1011 N/m2

answer is A.

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Detailed Solution

Given,

V=10-2cm3, V=1000cm3, P=10atm=10×105Nm-2

From the question, we know that,

B=PVV=10×105×100010-2=1×1011Nm-2

Hence the correct answer is 1×1011Nm-2.

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