[\dfrac{2Y_1Y_2}{Y_1+Y_2}...] Two rods of same length and area of cross-section and Young s moduli Y, and Y2 are joinedend to

For Competitive Exams

Two rods of same length and area of cross-section and Young s moduli Y, and Y2 are joined
end to end. The equivalent Young s modulus for the composite rod is

$\dfrac{Y_1+Y_2}{2}$

$\dfrac{2Y_1Y_2}{Y_1+Y_2}$

$\sqrt{Y_1Y_2}$

$Y_1+Y_2$

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