Odisha Board Solutions for Chapter: Elasticity, Exercise 1: MODEL QUESTIONS

The length of a wire is cut into half of its original length. What will be the effect on the maximum load it can bear?

$Y$-for brass is $10\times {10}^{10} \mathrm{N} {\mathrm{m}}^{-2}$ and $n$ for brass is $3.5\times {10}^{10} \mathrm{N} {\mathrm{m}}^{-2}$. Calculate Bulk modulus for brass.

What will be the density of copper under a pressure of $10000 \mathrm{N} {\mathrm{cm}}^{-2}$. (density of copper is $8.96\times {10}^3 \mathrm{Kg} {\mathrm{m}}^{-3}; B_{copper}=1.4\times {10}^{10} \mathrm{N} {\mathrm{m}}^{-2}$).

A thick rope of rubber of density $1.5 \mathrm{kg} {\mathrm{m}}^{-3}$, Young's modulus $5\times {10}^6 \mathrm{N} {\mathrm{m}}^{-2}$ and length $8 \mathrm{m}$ is hung from the ceiling of a room. Calculate the increase in its length due to its own weight.

Young's modulus increases with the rising of temperature.

Springs are made of steel and not of copper.

A cable is cut to half its original length. This change has no effect on the maximum load, the cable can support.

The stretching of a coil spring is deformed by shear modulus.