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A piece of rubber 10cm long stretches 6mm when a load of ...

A piece of rubber 10cm long stretches 6mm when a load of 100N is hung from it. What is the strain?

A.

60

B.

6

C.

6 x 10^-2

D.

6 x 10^-3

E.

0.6

View answer & explanation

Correct answer is C

Strain = $\frac{\Delta L}{L}$

Extension produced = 6mm or 0.6cm

Original length = 10cm

= $\frac{0.6}{10}$

= 0.06 or 6 x 10 $^{-2}$

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