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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > Steel wire of length L at 40 C is suspended from the ceiling and then a mass m is hung from its free end. The wire is cooled down from 40 C to 30 C to regain its original length L.

Steel wire of length L at 40 C is suspended from the ceiling and then a mass m is hung from its free end. The wire is cooled down from 40 C to 30 C to regain its original length L.

Steel wire of length L at 40 C is suspended from the ceiling and then a mass m is hung from its free end. The wire is cooled down from 40 C to 30 C to regain its original length L.