Elasticity

Q.

What is Tensile strength ?

Q. Bridges are mounted on rollers. Why?

Q.

What causes elasticity?

Q. The relationship between Young's modulus Y, Bulk modulus K and modulus of rigidity $\eta$ is

1. 
2. 
3. 
4. 

Q. Elasticity is the property of a matter to:

1. Get deformed, on application of an external load.
2. None of the above.
3. Get stretched as much as possible
4. Regain it's shape after getting deformed.

Q. If the volume of the given mass of a gas is increased four times, the temperature is raised from ${27}^{\circ }$;C to ${127}^{\circ }$;C. The elasticity will become

1. 4 times
2. 3 times
3. 1/4 times
4. 1/3 times

Q. The diagram shows a force-extension graph for a rubber band. Consider the following statements




I.It will be easier to compress this rubber than expand it
II.Rubber does not return to its original length after it is stretched
III.The rubber band will get heated if it is stretched and released
Which of these three statements can be deduced from the graph?

1. I only
2. III only
3. I and III
4. II and III

Q. Elasticity is the property of a matter to:

1. Get stretched as much as possible
2. Regain it's shape after getting deformed.
3. Get deformed, on application of an external load.
4. None of the above.

Q. A pan with set of weights is attached with a light spring. When disturbed, the mass-spring system oscillates with a time period of 0.6s. When some additional weights are added then time period is 0.7s. The extension caused by the additional weights is approximately

1. 1.38 cm
2. 3.5 cm
3. 1.75 cm
4. 2.45 cm

Q. When we stretch a rubber band it expand but when we release it , it comes back to it original size so why we call it as a solid