JEE Advanced Model Paper 2 with solutions for online practice

A copper wire is held at the two ends by rigid supports. At 30° C, the wire is just taut with negligible tension. The speed of transverse waves in this wire at 10° C is (10 x D ) ms−1 . Then the value of D is
(Take , Ycu = 1.3 × 1011 Pa , αcu = 1.7 × 10−5

0

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C−1 , ρcu = 9000 kgm−3)