Question

If the diameter of the wire is doubled keeping its length the same how does the young's modulus change

Answer 1

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Hey mate!

✍️____________________________

As you know

YOUNG'S MODULES:-(Y)

=LONGITUDINAL STRESS/ LONGITUDINAL STRAIN

initially Y = FL/A∆L........(1)

When diameter get doubled its cross sectional area becomes four times..

Final ,.

Y' = FL/4A∆L............(2)

Hence,

Y' =4Y

Hope it will help you..

#phoenix