For a solid rod,the Young's modulus of elasticity is $3.2 \times 10^{11} \, N m^{-2}$ and density is $8 \times 10^3 \, kg m^{-3}$. The velocity of longitudinal wave in the rod will be $......... \times 10^{3} \, m s^{-1}$.

In Young's experiment,if the length of the wire and the radius are both doubled,then the value of $Y$ will become:

The following four wires are made of the same material. Which of these will have the largest extension when the same tension is applied?

Explain the experimental determination of Young's modulus.

$A$ block of mass $2 \ kg$ is tied to one end of a $2 \ m$ long metal wire of $1.0 \ mm^2$ area of cross-section and rotated in a vertical circle such that the tension in the wire is zero at the highest point. If the maximum elongation in the wire is $2 \ mm$, the Young's modulus of the metal is (Acceleration due to gravity $= 10 \ ms^{-2}$)

Four wires of the same material are stretched by the same load. Which one of them will elongate the most if their dimensions are as follows?