Question

10.
The length of a wire is doubled. Then its Young's modulus
a) remains unchanged
b) becomes double
increases but becomes not exactly double
d) becomes half

explain!​

Answer 1

Answer:

a)Remains Unchanged

Explanation:

Since Youngs modulus is a property it does not change with change in its length.

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Answer 2

QUESTION :-

The length of a wire is doubled. Then its Young's modulus.

a) remains unchanged ✔✔

b) becomes double increases but becomes not exactly double.

d) becomes half

EXPLAINATION:-

the effect of changing area, by hanging the two wires side by side. Now the length is unchanged but the area is doubled. However, each wire only carries half of the force, so the extension is halved. Again, you'll find that young's modulus is unchanged.