A student plots a graph from his readings on the determination of Young modulus of a metal wire but forgets to put the labels (figure 14-Q4). The quantities on X and Y-axes may be respectively

Question

Philoid · Accepted Answer

Here, from the graph, we know that he two quantities have a direct relation or are directly proportional to each other.

We know, the Young’s Modulus is given by,

Where F is the force applied(mg), A is the area, L is the length and is the increase in length.

From the aforementioned formula,

Hence, weight is proportional to length increased and option (A) is true.

Similarly, stress, . Hence, (B) is true.

Again, . So, option(C) is true.

And option (D) is same as option(A).

So all options are true.