Question:medium
A string A of length 0.314 m and Young's modulus \(2 \times 10^{10}\) N/m² is connected to another string B of length and Young's modulus both twice of those of A. This series combination of strings is then suspended from a rigid support and its free end is fixed to a load of mass 0.8 kg. The net change in length of the combination is ______ mm. (radius of both the strings is 0.2 mm and acceleration due to gravity = 10 m/s²)
A string A of length 0.314 m and Young's modulus \(2 \times 10^{10}\) N/m² is connected to another string B of length and Young's modulus both twice of those of A. This series combination of strings is then suspended from a rigid support and its free end is fixed to a load of mass 0.8 kg. The net change in length of the combination is ______ mm. (radius of both the strings is 0.2 mm and acceleration due to gravity = 10 m/s²)
Updated On: Apr 10, 2026
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The Correct Option is B
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