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Q.

If Y, K, η and σ are the values of Young’s modulus, bulk modulus and modulus of rigidity and Poisson’s ratio of any material respectively. Choose the INCORRECT relation for these parameters

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a

K=Yη9η3Y

b

σ=3K2η6K+2η

c

η=3YK9K+Y

d

K=2η(1+σ)3(12σ)

answer is C.

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Detailed Solution

The relation between  Y,η,σ is given by

Y=3K(12σ) Y=2η(1+σ)

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