Question

In the Searle's method to determine the Young's modulus of a wire, a steel wire of length 156 cm and diameter 0.054 cm is taken as experimental wire. The average increase in length for $1\frac{1}{2}$ kg wt is found to be 0.05.cm. Then the Young's modulus of the wire

• A. $3.002\times 10^{11}N/m^2$
• B. $1.002\times 10^{11}N/m^2$
• C. $2.002\times 10^{11}N/m^2$
• D. $2.5\times 10^{11}N/m^2$

Answer 1

Answer: (C)

$y=\frac{Fl}{Ae}$