Question

The force required to stretch a wire of cross-section $1 cm ^2$ to double its length will be: (Given Yong's modulus of the wire $=2 \times 10^{11} N / m ^2$ )

• A. $1 \times 10^7 N$
• B. $1.5 \times 10^7 N$
• C. $2 \times 10^7 N$
• D. $2.5 \times 10^7 N$

Answer 1

Answer: (C)

$2 \times 10^7 N$

Answer 2

From the given options the correct answer is option (C): $2 \times 10^7 N$