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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
Longitudinal stress / longitudinal strain
Stress / change in 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?
Elasticity
Strain
Plasticity
Deformation
3)
Which of the following comes under the category of longitudinal stress?
Shearing stress
Both b and c
Compression stress
Tensile stress
4)
When the density of a material increases, what will happen to its Young’s modulus?
increases
decreases
Remains constant
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
Steel is not an elastic material
Rubber is more elastic than steel
Both a and c
6)
Which of the following is an example of elastic body?
Mud
Glass
Wax
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 ?
8Y
Y
0
2Y
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?
8mm
0.8cm
0.8m
0.08m
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
2:3
1:6
1:1
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Cite this Simulator:
amrita.olabs.edu.in,. (2015). Young's Modulus. Retrieved 17 December 2018, from amrita.olabs.edu.in/?sub=1&brch=5&sim=155&cnt=519