If a bar of sections of two different length and different diameters a – McqOptions

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1.	If a bar of sections of two different length and different diameters are in a line and P load is acting axially on them then what will be the change in length of the bar?
A.	P/E x (L<sub>1</sub> + L<sub>2</sub>)
B.	P/E x (A<sub>1</sub>/L<sub>1</sub> +A<sub>2</sub>/ L<sub>2</sub>)
C.	P/E x (L<sub>1</sub>/A<sub>1</sub> + L<sub>2</sub>/A<sub>2</sub>)
D.	E/P x (L<sub>1</sub>/A<sub>1</sub> + L<sub>2</sub>/A<sub>2</sub>)
Answer» D. E/P x (L<sub>1</sub>/A<sub>1</sub> + L<sub>2</sub>/A<sub>2</sub>)

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