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Questions  

Young's modulus of steel is 2.0×1011 N/m2. Express it in  dyne/cm 2

a
2.0×1015 dyne /cm2
b
2.0×1014 dyne /cm2
c
2.0×1013 dyne /cm2
d
2.0×1012 dyne /cm2

detailed solution

Correct option is D

IN =105 dyne  1 m2=104 cm2  ∴ 2.0×1011Nm2=2.0×1011×105104dynecm2=2.0×1012 dyne /cm2

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