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Rigidity modulus of steel is $η$ and its young's modulus is Y. A piece of steel of cross-sectional area ‘A’ is changed into a wire of length L and area A/10 then:

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Y increases and η decreases

Y and η remain the same

both Y and η increase

both Y and η decrease

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detailed solution

Correct option is B

η and Y are properties of material.These coefficients are independent of geometry of body.

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Rigidity modulus of steel is η and its young's modulus is Y. A piece of steel of cross-sectional area ‘A’ is changed into a wire of length L and area A/10 then:

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Ready to Test Your Skills?

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Rigidity modulus of steel is $η$ and its young's modulus is Y. A piece of steel of cross-sectional area ‘A’ is changed into a wire of length L and area A/10 then: