3. A rubber cord of cross sectional area
2cm? has length of Im when a tensile
force of 10N is applied, the length of the
cord increases by lcm what is the Y.M of
rubber
a) 2x10 Nm
b) 5x10 Nm
c) 5x 10-Nm-2
d) 2x 10-Nm
-2
-2
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