Two wires of same length and radius are joined in parallel and loaded. The Young.s modulii of the material of the wires are `Y_(1) & Y_(2)`. If the combination is taken as a single wire them its Young.s modulus is

Explanation

`F = F_1+F_2 rArr (Y(2A)e)/(l) = (Y_1 Ae)/(l) + (Y_2 Ae)/(l)`
`2Y_(eq) = Y_1+Y_2 rArr Y_(eq) = (Y_1+Y_2)/(2)`