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Young's modulus of steel is Y and its ri...

Young's modulus of steel is Y and its rigidity modulus is `eta`. A piece of steel of cross-sectional area A, is stretched into a wire of length L and area of cross-section `(A)/(4)`, In wire case

A

Y increases and `eta` decreases

B

Y decreases and `eta` increases

C

Both y and `eta` do not change

D

Both Y and `eta` are increased

Text Solution

Verified by Experts

The correct Answer is:
C
Both Y and `eta` depend upon the material of the wire or piece. They are not changed by the changes in dimensions. Hence Y and `eta` do not change.
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