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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 ?
Strain / Stress
Change in length / original length
Stress / change in length
Longitudinal stress / longitudinal strain
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
Deformation
Strain
Elasticity
3)
Which of the following comes under the category of longitudinal stress?
Both b and c
Shearing stress
Compression stress
Tensile stress
4)
When the density of a material increases, what will happen to its Young’s modulus?
None of these
increases
Remains constant
decreases
5)
What does the following statement mean? “The elastic limit of steel is greater than that of rubber”.
Steel is not an elastic material
Both a and c
Rubber is more elastic than steel
Steel is more elastic than rubber
6)
Which of the following is an example of elastic body?
Wax
Both b and c
Glass
Mud
7)
What happen when bodies are deformed beyond elastic limit?
The modulus of elasticity decreases
They stay permanently deformed
All of the above
They suddenly turned back to its original shape
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 ?
2Y
0
8Y
Y
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?
0.8cm
8mm
0.08m
0.8m
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?
1:3
1:1
2:3
1:6
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Cite this Simulator:
amrita.olabs.edu.in,. (2015). Young's Modulus. Retrieved 21 August 2018, from amrita.olabs.edu.in/?sub=1&brch=5&sim=155&cnt=519