Day 274: JEE Mains Physics

1. A.
   $\oint\ \overrightarrow{B} \cdot \overrightarrow{dl} = \mu_{0}I$
2. B.
   $\oint\ \overrightarrow{E} \cdot \overrightarrow{dl} = 0$
3. C.
   $\oint\ \overrightarrow{E} \cdot \overrightarrow{dl} = - \frac{\partial\phi_{B}}{\partial t}$
4. D.
   $\oint\ \overrightarrow{D} \cdot \overrightarrow{dA} = Q$

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1. A.
   $\frac{q}{4\epsilon_{0}}$
2. B.
   $\frac{q}{2\epsilon_{0}}$
3. C.
   $\frac{q}{8\epsilon_{0}}$
4. D.
   Zero

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1. A.
   $4\text{ }mm$
2. B.
   $1.33\text{ }mm$
3. C.
   $3\text{ }mm$
4. D.
   $2\text{ }mm$

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1. A.
   $215\text{ }nm$
2. B.
   $414\text{ }nm$
3. C.
   $400\text{ }nm$
4. D.
   $200\text{ }nm$

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1. A.
   $1:4$
2. B.
   $4:1$
3. C.
   $1:8$
4. D.
   $8:1$

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