Question 3 :
The Young's modulus of a wire of length $L$ and radius $r$ is $Y$. If the length is reduced to $\cfrac{L}{2}$ and radius is $\cfrac{r}{2}$, then the Young's modulus will be

Question 5 :
Assertion (A): Steel is more elastic than rubber.<br/>Reason (R) : Under a given deforming force, steel&#160;is deformed less than rubber.<br/>A) Both Assertion and Reason are true and the&#160;reason is correct explanation of the assertion<br/>B)Both Assertion and Reason are true, but reason&#160;is not correct explanation of the assertion<br/>C) Assertion is true, but the reason is false<br/>D) Assertion is false, but the reason is true

Question 7 :
&#160;A cable that can support a load of 1000 N is cut into equal parts. the maximum load that can be supported by the either part is:-

Question 8 :
Assertion: The strain present in the material after unloading is called the residual strain or plastic strain and the strain disappears during unloading is termed as recoverable or elastic strain. Reason: After yieild point, there is some residual stress left in an material on unloading.

Question 9 :
Substances which can be stretched to cause large strains are called

Question 10 :
The property of metals which allows them to be drawn readily into thin wires is: