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Class 11
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Young's Modulus
Young's Modulus
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1)
What is Young’s modulus ?
Stress / change in length
Strain / Stress
Longitudinal stress / longitudinal strain
Change in length / original length
2)
What is the property of a body by virtue of which it tends to regain its original size and shape by the removal of applied force is called?
Plasticity
Elasticity
Deformation
Strain
3)
Which of the following comes under the category of longitudinal stress?
Compression stress
Shearing stress
Both b and c
Tensile stress
4)
When the density of a material increases, what will happen to its Young’s modulus?
increases
Remains constant
decreases
None of these
5)
What does the following statement mean? “The elastic limit of steel is greater than that of rubber”.
Steel is more elastic than rubber
Rubber is more elastic than steel
Steel is not an elastic material
Both a and c
6)
Which of the following is an example of elastic body?
Mud
Wax
Glass
Both b and c
7)
What happen when bodies are deformed beyond elastic limit?
They stay permanently deformed
The modulus of elasticity decreases
They suddenly turned back to its original shape
All of the above
8)
The young’s modulus of a wire of radius R and length L is Y N/m2. If the radius and length are changed to 2R and 4L respectively, then its young’s modulus will be ?
Y
2Y
8Y
0
9)
A wire extends 1 cm by the application of certain force. Double the force is applied to another wire of same material and length, but half the radius of previous one. Then what will be the elongation produced by the wire?
0.08m
0.8cm
0.8m
8mm
10)
The ratio of radius of two wires is 2:1. If the same force is applied to both of them, the extension produced is in the ratio 2:3. What will be the ratio of their lengths?
2:3
1:3
1:1
1:6
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Cite this Simulator:
amrita.olabs.edu.in,. (2015). Young's Modulus. Retrieved 18 February 2018, from amrita.olabs.edu.in/?sub=1&brch=5&sim=155&cnt=519