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 on decreasing and wire extends and breaks. 

(b) The area of wire goes on decreasing and wire breaks. 

(c) The wire extends and area remains constant. 

(d) The area remains same and wire length is also same.

Answer 1

Correct option: (a) The area of wire goes on decreasing and wire extends and breaks.

Explanation:

First, the length of wire goes on increasing i.e., area decreases and finally at breaking stress the wire breaks.