Assignment Details

Mechanical Properties of Solids

66 minutes

Jan 20, 12:54 PM

20.0 marks

MCQ

20 questions

Prakhar Shukla

Class Details

PHYSICS

DPS CLASS XI

PHYSICS

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Question Text

Question 1 :
The compressibility of water is $\displaystyle 46.4\times 10^{-6}/atm $ This means that

Question 2 :
A compressive force is applied to a uniform rod of rectangular cross-section so that its length decreases by $1\%$. If the Poisson’s ratio for the material of the rod be $0.2$, which of the following statements is correct ? The volume approximately .....”

Question 3 :
 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 4 :
The bulk modulus of an ideal gas at constant temperature is :

Question 5 :
The property of a material due to which shape is changed permanently is known as:

Question 6 :
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 7 :
The elastic energy stored per unit volume in a stretched wire is

Question 9 :
Change in the shape of a body caused by the application of a force (stress) is called as :

Question 10 :
Assertion: If we apply force to a lump of putty or mud, they have no gross tendency to regain their previous shape. Reason: This type of substances are called plastic substances.

Question 11 :
There are two wires of same material. their radii and lengths are both in the ratio 1:2. if the extensions produced are equal, what is the ratio of the loads?

Question 13 :
A wire of length L and radius r fixed at one end and a force F applied to the other end produces and extension $l$ . The extension produced in another wire of the same material of length 2Land radius 2r by a force 2 F is:

Question 15 :
The Young's modulus of the material of the wire of length $L$ and radius $r$ is $Y{ N }/{ { m }^{ 2 } }$. If the length is reduced to ${ L }/{ 2 }$ and radius ${ r }/{ 2 }$, the Young's modulus will be:

Question 16 :
The property of metals which allows them to be drawn into wires is known as :

Question 17 :
State whether true or false : The metal used in construction of a bridge should have high Young's modulus.

Question 18 :
Substances which can be stretched to cause large strains are called

Question 20 :
The property of metals which allows them to be drawn readily into thin wires is:

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