Day 609: JEE Mains Physics

1. A.
   Both $A$ and $R$ are correct and $R$ is the correct explanation of $A$
2. B.
   Both $A$ and $R$ are correct but $R$ is NOT the correct explanation of $A$
3. C.
   $A$ is correct but $R$ is not correct
4. D.
   $A$ is not correct but $R$ is correct

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1. A.
   $P_{A} < P_{B} < P_{C} < P_{D}$
2. B.
   $P_{C} < P_{D} < P_{A} < P_{B}$
3. C.
   $P_{B} < P_{C} < P_{D} < P_{A}$
4. D.
   $P_{C} < P_{B} < P_{A} < P_{D}$

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1. A.
   $\frac{\rho_{0}r}{4\varepsilon_{0}}\left( \frac{3}{4} - \frac{r}{R} \right)$
2. B.
   $\frac{\rho_{0}r}{3\varepsilon_{0}}\left( \frac{3}{4} - \frac{r}{R} \right)$
3. C.
   $\frac{\rho_{0}r}{4\varepsilon_{0}}\left( 1 - \frac{r}{R} \right)$
4. D.
   $\frac{\rho_{0}r}{5\varepsilon_{0}}\left( 1 - \frac{r}{R} \right)$

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1. A.
   It works as a voltage regulator in forward bias and behaves like simple pn junction diode in reverse bias.
2. B.
   It works as a voltage regulator only in forward bias.
3. C.
   It works as a voltage regulator in both forward and reverse bias.
4. D.
   It works as a voltage regulator in reverse bias and behaves like simple pn junction diode in forward bias.

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

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