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Q. No.
1. \(\sigma_A=\sigma_C\)
2. \(\sigma_A=2\sigma_C\)
3. \(\sigma_C=2\sigma_A\)
4. \(\sigma_C=\dfrac34\sigma_A\)
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology
Which, of the following, shows the proper dependence of \(S\) as a function of \(\cos\theta?\)
| 1. |  |
2. |  |
| 3. |  |
4. |  |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA wire has a length \(l_1\) when it is under tension \(T_1,\) and length \(l_2\) when it is under tension \(T_2.\) When it is under a tension \(T_1 + T_2,\) its length is:
1. \(l_1+l_2\)
2. \(\dfrac{l_1T_1+l_2T_2}{T_1+T_2}\)
3. \(\dfrac{l_1T_1-l_2T_2}{T_1-T_2}\)
4. \(\dfrac{l_1T_2+l_2T_1}{T_1+T_2}\)
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology
1. tensile2. compressive
3. shear
4. zero
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology
| 1. | \(\dfrac{mg}{AY}\) | 2. | \(\dfrac{2mg}{AY}\) |
| 3. | \(\dfrac{3mg}{AY}\) | 4. | \(\dfrac{mg}{2AY}\) |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology
| 1. |  |
2. |  |
| 3. |  |
4. |  |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyTwo wires of identical dimensions but of different materials having Young's moduli \(Y_1, Y_2\) are joined end to end. When the first wire is under a tension \(T,\) it elongates by \(x_1\) while the second wire elongates by \(x_2\) under the same tension \(T.\) The elongation of the composite wire when it is under tension \(T\) is:
| 1. | \(x_1+x_2\) | 2. | \(\dfrac{Y_1x_1+Y_2x_2}{Y_1+Y_2}\) |
| 3. | \(\dfrac{x_1+x_2}{2}\) | 4. | \(\dfrac{Y_1x_2+Y_2x_1}{Y_1+Y_2}\) |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology
| 1. | \(\dfrac{F}{A} \mathrm{sin \theta}\) | 2. | \(\dfrac{F}{A} \mathrm{cos \theta}\) |
| 3. | \(\dfrac{F}{2A} \mathrm{sin2 \theta}\) | 4. | \(\dfrac{F}{A} \mathrm{cos^2 \theta}\) |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology
| 1. | \(S_\text A=\text{zero},S_\text B=\text{maximum,}\) \(S_\text C=\text{intermediate}\) |
| 2. | \(S_\text A=\text{maximum, }S_\text B=0,\) \(S_\text C=\text{intermediate}\) |
| 3. | \(S_\text A=S_\text B=\text{maximum},\) \(S_\text C=\text{zero}\) |
| 4. | \(S_\text A=S_\text B=S_\text C=\text{constant throughout}\) |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology(Take \(g=10~\text{m/s}^2\))
1. \(1~\text{mm}\)
2. \(0.5~\text{mm}\)
3. \(0.25~\text{mm}\)
4. \(1.2~\text{mm}\)
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