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81. A rubber pipe of density

A rubber pipe of density 1..5×103 N/m2  and Young’s modulus  is  5×106 N/m2 suspended from the roof. The length of the pipe is 8 m. What will be the change in length due to its own weight

(a)  9.6 m                                               (b) 9.6×103 m

(c)  19.2×10-2 m                                   (d) 9.6×102 m

Answer-d

(49)

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