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Question

The young's modulus of a wire of length 'L' and radius 'r' is 'Y'. If length is reduced to L/2 and radius r/2, Young's modulus will be :
  1. Y/2
  2. Y
  3. 2Y
  4. 4Y

A
4Y
B
Y/2
C
Y
D
2Y
Solution
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Young's Modulus is a material constant invariant of the forces and dimensions.
It is the ratio of stress to strain. It will not change with respect to individual stress and strain.

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