Young’s modulus of steel is 1.9 \times 10^{11} N/m^{2}. When expressed in CGS units of dynes/cm2, it will be equal to:

a) 1.9 \times 10^{10}

b) 1.9 \times 10^{11}

c) 1.9 \times 10^{12}

d) 1.9 \times 10^{13}

Answers (1)

The answer is the option (c) 1.9\times 10^{12}

Explanation : Young's modulus (Y) =1.9\times 10^{11}N/m

Converting into dyne/cm2-

Y=\frac{1.9\times 10^{11}\times 10^{5}dynes}{10^{4}cm^{2}}

=1.9\times 10^{11+5-4}

=1.9\times 10^{12}dyne/cm^{2}

 

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