Day 357: JEE Mains Physics

1. A.
   $100\text{ }J$
2. B.
   $300\text{ }J$
3. C.
   Zero
4. D.
   $200\text{ }J$

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1. A.
   $\frac{3}{2}C$
2. B.
   C
3. C.
   $\frac{2}{3}C$
4. D.
   $\frac{C}{2}$

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1. A.
   $1.5\text{ }kg$
2. B.
   $5.8\text{ }kg$
3. C.
   $2.9\text{ }kg$
4. D.
   $3.8\text{ }kg$

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1. A.
   $\frac{\varepsilon_{0}\text{ }A}{\text{ }d}\left( \frac{1}{2} + \frac{K_{1}{\text{ }K}_{2}}{{\text{ }K}_{1} + K_{2}} \right)$
2. B.
   $\frac{\varepsilon_{0}\text{ }A}{\text{ }d}\left( \frac{1}{2} + \frac{K_{1}{\text{ }K}_{2}}{2\left( {\text{ }K}_{1} + K_{2} \right)} \right)$
3. C.
   $\frac{\varepsilon_{0}\text{ }A}{\text{ }d}\left( \frac{1}{2} + \frac{K_{1} + K_{2}}{{\text{ }K}_{1}{\text{ }K}_{2}} \right)$
4. D.
   $\frac{\varepsilon_{0}\text{ }A}{\text{ }d}\left( \frac{1}{2} + \frac{2\left( {\text{ }K}_{1} + K_{2} \right)}{K_{1}{\text{ }K}_{2}} \right)$

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