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Young 's modulus of steel is 2.0 xx 10^(...

Young 's modulus of steel is `2.0 xx 10^(11)N m//(2) `. Express it is `"dyne"/cm^(2)`.

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The correct Answer is:
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` 1N = 10^(5) ` dyne
`1 m^(2) = 10^(4) cm^(2)`
` 20 xx 10^(11) (N)/(m^(2)) `
`= (20 xx 10 ^(12) xx 10^(5))/(10^(4)) ("dyne")/(cm^(2))`
` = 20 xx10^(12)` "dyne"//cm^(2)`
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