- 1(current)
Q. No.Given below are two statements:
| Assertion (A): | On elastic bodies, though we apply force and experience elongation, it is a general practice to plot stress versus strain instead of plotting force versus elongation graph. |
| Reason (R): | Stress versus strain plotting makes the graph independent of the geometry of the sample body and reflects only the material property. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | Both (A) and (R) are False. |
Subtopic: Stress - Strain Curve |
84%
Level 1: 80%+
Hints
The figure shows the relationship between tensile stress and strain for some typical materials. A material which is good for making wires by stretching, is:
| 1. | material-1 |
| 2. | material-2 |
| 3. | material-3 |
| 4. | material-2 and material-3 |
Subtopic: Stress - Strain Curve |
81%
Level 1: 80%+
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Hints
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The stress-strain curves for four metals are shown in the figure. Which metal has the maximum Young's modulus of elasticity?
1. \(A\)
2. \(B \)
3. \(C \)
4. \(D \)
1. \(A\)
2. \(B \)
3. \(C \)
4. \(D \)
Subtopic: Stress - Strain Curve |
78%
Level 2: 60%+
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Hints
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A steel wire has a proportional limit of \(8 \times 10^8~\text{N/m}^2\) and a Young’s modulus of \(2 \times 10^{11}~\text{N/m}^2.\) If the wire is \(1~\text{m}\) long, what is the maximum elongation it can undergo without exceeding the proportional limit?
| 1. | \(2~\text{mm}\) | 2. | \(4~\text{mm}\) |
| 3. | \(1~\text{mm}\) | 4. | \(8~\text{mm}\) |
Subtopic: Stress - Strain Curve | Young's modulus |
88%
Level 1: 80%+
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Hints
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- 1(current)
Q. No.
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