Day 311: JEE Mains Physics

1. A.
   $0.91eV$
2. B.
   $0.81eV$
3. C.
   $0.01eV$
4. D.
   $0.5eV$

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1. A.
   $2\pi \times 10^{- 4}$ SI units
2. B.
   $2\pi \times 10^{- 7}$ SI units
3. C.
   $\frac{5\pi}{4} \times 10^{- 7}$ SI units
4. D.
   $\frac{4\pi}{5} \times 10^{- 4}$ SI units

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

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

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