Day 488: JEE Mains Physics

1. A.
   $0^{\circ}$
2. B.
   $\tan^{- 1}\frac{(2\overrightarrow{Q} - 2\overrightarrow{P})}{2\overrightarrow{Q} + 2\overrightarrow{P}}$
3. C.
   $\tan^{- 1}\left( \frac{P}{Q} \right)$
4. D.
   $\tan^{- 1}\left( \frac{2Q}{P} \right)$

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1. A.
   80
2. B.
   70
3. C.
   30
4. D.
   40

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1. A.
   $\sqrt{\frac{2c\Delta M}{M}}$
2. B.
   $\frac{\Delta{Mc}^{2}}{3}$
3. C.
   c $\sqrt{\frac{2\Delta M}{M}}$
4. D.
   $c\sqrt{\frac{3\Delta M}{M}}$

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

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