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Question: Longitudinal stress of <img src="https://cdn.pureessence.tech/canvas_649.png?top_left_x=412&top_left...

Longitudinal stress of is applied on a wire. The percentage increase in length is

A

0.002

B

0.001

C

0.003

D

0.01

Answer

0.001

Explanation

Solution

Longitudinal strain lL= stress Y=1061011=10−5\frac { l } { L } = \frac { \text { stress } } { Y } = \frac { 10 ^ { 6 } } { 10 ^ { 11 } } = 10 ^ { - 5 }

Percentage increase in length =10−5×100=0.001%= 10 ^ { - 5 } \times 100 = 0.001 \%