1.

If in the above question the Young's modulus of the material is Y, the value of extension x is :

Answer»

`((Wl)/(YA))^(1//3)`
`((YA)/(Wl))^(1//3)`
`1/L[(WA)/Y]^(1//3)`
`l[W/(YA)]^(1//3)`

Solution :We KNOW Y=`("Stress")/("strain")=(Wl)/(2Ax)xx(2l^(2))/(X^(2))`
`Y=(Wl^(3))/(AX^(3))` or `x=(W/(AY))^(1//3)xxl`
`therefore` Correct choice is (d).


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