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Deformation of Solids

Authored by Theresa Samson

Physics

11th Grade

Used 5+ times

Deformation of Solids
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20 questions

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1.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Media Image

Which of the following correctly defines the terms stress, strain and Young modulus?

A

B

C

D

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A wire is stretched by 8 mm when a load of 60 N is applied. What will be the extension of a wire of the same material having four times the cross-sectional area and twice the original length, when the same load is applied?

2 mm

4 mm

8 mm

16 mm

3.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Media Image

The tension in a spring of natural length I0 is first increased from zero to T1, causing the length to increase to I1. The tension is then reduced to T2, causing the length to decrease to T2 (as shown).

Which area of the graph represents the work done by the spring during this reduction in length?

MLP

MNQP

MNSR

MPLU

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Two springs P and Q both obey Hooke’s law. They have spring constants 2k and k respectively. The springs are stretched, separately, by a force that is gradually increased from zero up to a certain maximum value, the same for each spring. The work done in stretching spring P is WP, and the work done in stretching spring Q is WQ. How is WP related to WQ?

WP = 1/4 WQ

WP = 1/2 WQ

WP = 2WQ

WP = 4WQ

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

A number of similar springs, each having the same spring constant, are joined in three arrangements X, Y and Z. The same load is applied to each. What is the order of increasing extension for these arrangements?

A

B

C

D

6.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

What is plastic deformation?

Plastic deformation occurs when strain is not proportional to stress but when the load is removed the material returns to its original length.

Plastic deformation occurs if, when the load is removed, the material contracts but a permanent stretching has occurred.

Plastic deformation occurs until the extension is no longer proportional to the load.

Plastic deformation occurs when the material extends so that strain is directly proportional to stress.

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

The graph shows how the length of a particular rubber cord varies as force is applied. What is the maximum strain energy in this deformed rubber cord?

2.5 J

5.0 J

7.5 J

10 J

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