Day 605: JEE Mains Physics

1. A.
   $L_{A}$ and $L_{B}$ are both constant in magnitude and direction
2. B.
   $L_{B}$ is constant in direction with varying magnitude
3. C.
   $L_{B}$ is constant, both in magnitude and direction
4. D.
   $L_{A}$ is constant, both in magnitude and direction

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

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1. A.
   $16\widehat{i} + 24\widehat{j} - 32\widehat{k}$
2. B.
   $- 16\widehat{i} - 24\widehat{j} - 32\widehat{k}$
3. C.
   $- 16\widehat{i} - 24\widehat{j} + 32\widehat{k}$
4. D.
   $- 16\widehat{i} + 24\widehat{j} + 32\widehat{k}$

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1. A.
   $\mu = \frac{\sin\left( \delta_{\text{min~}} \right)}{\sin\left( \frac{A}{2} \right)}$
2. B.
   $\mu = \frac{\sin\left( \frac{A + \delta_{\text{min~}}}{2} \right)}{\sin\left( \frac{A}{2} \right)}$
3. C.
   $\mu = \frac{\sin\left( \frac{A}{2} \right)}{\sin\left( \frac{A + \delta_{\min}}{2} \right)}$
4. D.
   None of these

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