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[" Q.4Rigidity modulus of steel is "eta"...

[" Q.4Rigidity modulus of steel is "eta" and its Young's modulus is "Y" .A piece of steel of cross-sectional "],[" area a is stretched into a wire of length "L" area a/ "10" .Then "],[[" a."Y" increases and "eta" decreases "," ( "gamma" and "eta" remain the same "],[" c.",Y" decreases and "eta" increases "]" d.Both "Y" and "eta" increases "]

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