For a given material, Young's modulus is...

For a given material, Young's modulus is 2.4 times that of rigidity modulus. Its Poisson's ratio is

A

2.4

B

1.2

C

`0.4`

D

`0.2`

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The correct Answer is:

D

`Y= 2 eta (1+ sigma)`
`rArr 2.4 eta = 2 eta (1 + sigma) rArr 1.2 =1 + sigma rArr sigma= 0.2`

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