Question

What happens when the applied load increases and upto breaking stress in the experiment to determine the Young's modulus of elasticity?

• A. The area of wire goes in decreasing and wire extends and breaks.
• B. The area of wire goes in increasing and wire breaks.
• C. The wire extends and area remains constant.
• D. The area remains same and wire length is also same.

Answer 1

The correct option is A The area of wire goes in decreasing and wire extends and breaks.

$\begin{array}{c}\text{In searl's experiment, when applied load}\\ \text{increases upto breaking stress. then, area}\\ \text{of wire goes on decreasing and length}\\ \text{will extend and finally break.}\end{array}$

Hence option A is correct