Day 511: JEE Mains Physics

1. A.
   $\frac{4\pi{Kr}_{1}r_{2}\left( \theta_{2} - \theta_{1} \right)}{r_{2} - r_{1}}$
2. B.
   $\frac{\pi r_{1}r_{2}\left( \theta_{2} - \theta_{1} \right)}{r_{2} - r_{1}}$
3. C.
   $\frac{K\left( \theta_{2} - \theta_{1} \right)}{r_{2} - r_{1}}$
4. D.
   $\frac{K\left( \theta_{2} - \theta_{1} \right)\left( r_{2} - r_{1} \right)}{4\pi r_{1}r_{2}}$

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1. A.
   $\frac{V_{a}}{V_{d}} = \left( \frac{V_{b}}{V_{c}} \right)^{- 1}$
2. B.
   $\frac{V_{a}}{V_{d}} \neq \frac{V_{b}}{V_{c}}$
3. C.
   $\frac{V_{a}}{V_{d}} = \frac{V_{b}}{V_{c}}$
4. D.
   $\frac{V_{a}}{V_{d}} = \left( \frac{V_{b}}{V_{c}} \right)^{2}$

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1. A.
   ${MT}^{- 2}{\text{ }A}^{- 1}$
2. B.
   $L^{- 1}A$
3. C.
   ${LT}^{- 2}{\text{ }A}^{- 1}$
4. D.
   ${ML}^{2}{\text{ }T}^{- 2}{\text{ }A}^{- 1}$

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1. A.
   $\frac{2\lambda AD}{d_{0}^{2}}$
2. B.
   $\frac{2\lambda AD}{d_{0}^{2} - A^{2}}$
3. C.
   $\frac{2\lambda AD}{d_{0}^{2} + A^{2}}$
4. D.
   $\frac{2\lambda d_{0}D}{d_{0}^{2} - A^{2}}$

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1. A.
   $\frac{1}{3}\text{ }mm/s$
2. B.
   $3\text{ }mm/s$
3. C.
   $\frac{1}{3}\text{ }cm/s$
4. D.
   $3\text{ }cm/s$

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