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Q. No.1. \(0.4~\text{mm}\)
2. \(40~\text{mm}\)
3. \(8~\text{mm}\)
4. \(4~\text{mm}\)
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology1. zero
2. \(\dfrac{2W}{A}\)
3. \(\dfrac{W}{A}\)
4. \(\dfrac{W}{2A}\)
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology| 1. | \(10^{11}\) | 2. | \(10^{17}\) |
| 3. | \(10^{7}\) | 4. | \(10^{5}\) |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology| Assertion (A): | The stretching of a spring is determined by the shear modulus of the material of the spring. |
| Reason (R): | A coil spring of copper has more tensile strength than a steel spring of the same dimensions. |
| 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 False but (R) is True. |
| 4. | (A) is True but (R) is False. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA wire of length \(L\), area of cross section \(A\) is hanging from a fixed support. The length of the wire changes to \(\mathrm{L}_1\)when mass \(M\) is suspended from its free end. The expression for Young's modulus is:
| 1. | \(\frac{{Mg(L}_1-{L)}}{{AL}}\) | 2. | \(\frac{{MgL}}{{AL}_1}\) |
| 3. | \(\frac{{MgL}}{{A(L}_1-{L})}\) | 4. | \(\frac{{MgL}_1}{{AL}}\) |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhen a block of mass \(M\) is suspended by a long wire of length \(L\), the length of the wire becomes (\(L+l\)). The elastic potential energy stored in the extended wire is:
1. \({1}/{2}~MgL\)
2. \(Mgl\)
3. \(MgL\)
4. \({1}/{2}~Mgl\)
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe stress-strain curves are drawn for two different materials \(X\) and \(Y.\) It is observed that the ultimate strength point and the fracture point are close to each other for material \(X\) but are far apart for material \(Y.\) We can say that the materials \(X\) and \(Y\) are likely to be (respectively):
| 1. | ductile and brittle |
| 2. | brittle and ductile |
| 3. | brittle and plastic |
| 4. | plastic and ductile |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologySelect Chapter Topics:
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Q. No.
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