Lab Activity: Young’s Modulus of Elasticity Using Searle’s Apparatus

Cotyledons are also called-

Why is it important to wait for two minutes after every addition or removal of weight during the Young’s Modulus of Elasticity experiment?

The length of the wire in Searle's apparatus is one meter and its radius of cross section is measured as $0.1 \mathrm{mm}$. If the extension produced in it is $0.82 \mathrm{mm}$ when a load of $0.5 \mathrm{kg}$ is kept on the hanger then calculate the Young's modulus of the material of the wire.

Which of the following statements is correct about the dead weight on the auxiliary wire in Searle's apparatus?

The shifting of the air bubble is adjusted using a spherometer in Searle's apparatus. If the screw moves through $2 \mathrm{mm}$ in two rotations and there are $100$ divisions on its circular scale then what will be its least count?

A graph plotted by a student from his readings on the determination of the Young's modulus of a metal wire is shown below.

What may be the quantities on the X and Y axes respectively?

To find the Young's modulus of the material, a wire of length $L$ and radius $r$ of cross-sectional area is suspended from a rigid support. When a mass $M$ is attached to its other end, it is extended by a length $l$. Which one is the correct formula for its calculation?