Young's modulus of steel is 1.9x1 0¹¹ N/ m² . When expressed in CGS units of dynes /cm² , it will be equal to

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1.9x10¹⁰

1.9x10¹¹

1.9x10¹³

1.9x10¹²

answer is C.

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Detailed Solution

$\begin{array}{l} Y = 1 .9 \times 10^{11} \frac{N}{m^{2}} = 1 .9 \times 10^{11} \frac{10^{5} dynes}{10^{4} {cm}^{2}} \\ = 1 .9 \times 10^{12} \frac{dynes}{{cm}^{2}} \end{array}$

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