Question Text
Question 1 :
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 2 :
Assertion: Stress is the internal force per unit area of a body.
Reason: Rubber is more elastic than steel.
Question 3 :
The property of metals which allows them to be drawn readily into thin wires is:
Question 6 :
Assertion: Strain is a unitless quantity.
Reason: Strain is equivalent to force
Question 7 :
For which of the following is the modulus of rigidity highest?<br>
Question 9 :
The bulk modulus of an ideal gas at constant temperature is :
Question 12 :
The ratio of lateral strain to the linear strain within elastic limit is known as:
Question 13 :
Fill in the blank.<br/>In a technical sense a substance with a ________ elasticity is one that requires a ______  force to produce a distortion-for example, a steel sphere. <br/><br/>
Question 14 :
A spring is made of steel and not of copper because
Question 15 :
The temperature of a wire is doubled. The Young's modulus of elasticity will ?
Question 16 :
The property of a material due to which shape is changed permanently is known as:<br/>