EASY
JEE Advanced
IMPORTANT
Earn 100

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.

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Which of these can be deduced from the graph:

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Important Questions on Elasticity

EASY
JEE Advanced
IMPORTANT
Physics For Joint Entrance Examination JEE (Advanced): Mechanics II>Chapter 7 - Elasticity>Exercises>Q 1
A copper wire and a steel wire of the same cross-sectional area and length are joined end-to-end (at one end). Equal and opposite longitudinal forces are applied to the free ends giving a total elongation of l. Then the two wires will have
MEDIUM
JEE Advanced
IMPORTANT
Physics For Joint Entrance Examination JEE (Advanced): Mechanics II>Chapter 7 - Elasticity>Exercises>Q 2
Each of the pictures shows four objects tied together with rubber bands being pulled to the right across a horizontal frictionless surface by a horizontal force F. All the objects have the same mass; all the rubber bands obey Hooke's law and have the same equilibrium length and the same force constant. Which of these pictures is drawn most correctly?
MEDIUM
JEE Advanced
IMPORTANT
Physics For Joint Entrance Examination JEE (Advanced): Mechanics II>Chapter 7 - Elasticity>Exercises>Q 3

Two equal and opposite point forces are applied at midpoints of the ends of a rod of square cross section, as shown. Consider the dotted section ABCD. If the rod is cut across this cross section, the force exerted by the right part of the rod on left part across this cross section is

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MEDIUM
JEE Advanced
IMPORTANT
Physics For Joint Entrance Examination JEE (Advanced): Mechanics II>Chapter 7 - Elasticity>Exercises>Q 4
On applying a stress of x N m-2, the length of wire of some material gets doubled. Value of Young's modulus for the material of wire in N m-2, is (assume Hooke's law to be valid and go for approx. results)
EASY
JEE Advanced
IMPORTANT
Physics For Joint Entrance Examination JEE (Advanced): Mechanics II>Chapter 7 - Elasticity>Exercises>Q 5
The ratio of diameters of two wires of same materials is n: 1. The length of each wire is 4 m. On applying the same load, the increase in length of thin wire will be n>1
EASY
JEE Advanced
IMPORTANT
Physics For Joint Entrance Examination JEE (Advanced): Mechanics II>Chapter 7 - Elasticity>Exercises>Q 6
A nylon rope 3 cm in diameter has a breaking strength of 1.5×105 N. The breaking strength of a similar rope of diameter 1.5 cm and same length is
MEDIUM
JEE Advanced
IMPORTANT
Physics For Joint Entrance Examination JEE (Advanced): Mechanics II>Chapter 7 - Elasticity>Exercises>Q 7
The dimensions of four wires of the same material are given below. In which wire the increase in the length will be maximum?
MEDIUM
JEE Advanced
IMPORTANT
Physics For Joint Entrance Examination JEE (Advanced): Mechanics II>Chapter 7 - Elasticity>Exercises>Q 8
Two wires of same material and length but diameter in the ratio 1:2 are stretched by the same force. The potential energy per unit volume for the two wires when stretched will be in the ratio