Question

In youngs experiment, if length of wire and radius bothare doubled then the value of y will become

Answer 1

Answer:

In the Young's experiment, if the length of a wire and radius both are doubled, then what will be the value of Y?

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Value of Y will remain same because Y=(longitudinal stress) /(longitudinal strain) and

longitudinal strain=l/L

if you make length double i.e. 2L then extension will also be double i.e. 2l

so longitudinal strain=2l/2L =l/L

again it is same so Young’s Modulus Y remains same.

It is property of a material(with in elastic limits) and

it does not depends on length, area of cross section and stress