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UPSC Civil Service Exam Questions

Q1:

If the Young's modulus 'E' is equal to bulk modulus 'K', then what is the value of the Posson's ratio ?

A

B

C

D

ANS:C -

K =E/3(1-2n).

Because K=E.
K=K/3(1-2n),
3(1-2n)=1,
3-6n=1,
2=6n,
n=2/6,
n=1/3.



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