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InterviewSolution
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One end of a horizontal thick copper wire of length 2L and radius 2R is welded to an end fo another horizontal thin copper wire of lenth L and radius R. When the arrangement is stretched by applying forces at two ends, the ratio of the elongation in the thin wire to that in the thick wire isA. `0.25`B. `0.50`C. `2.00`D. `4.00` |
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Answer» Correct Answer - C `k_(1) = (pi4R^(2)x)/(2L), k_(2) = (piR^(2)y)/(L)` `F = k_(1) x = k_(2) y` `rArr (y)/(x) = (k_(1))/(k_(2)) = 2` |
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