Magnetism and Matter

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

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1. A.
   $\frac{6}{5} \times 10^{- 3}\%$
2. B.
   $\frac{5}{6} \times 10^{- 5}\%$
3. C.
   $\frac{5}{6} \times 10^{- 4}\%$
4. D.
   $\frac{5}{3} \times 10^{- 5}\%$

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1. A.
   $\chi = \frac{\mu}{\mu_{0}} - 1$
2. B.
   $\chi = \frac{\mu_{r}}{\mu_{0}} + 1$
3. C.
   $\chi = \mu_{r} + 1$
4. D.
   $\chi = 1 - \frac{\mu}{\mu_{0}}$

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1. A.
   Statement I is incorrect but Statement II is true
2. B.
   Both Statement I and Statement II are true.
3. C.
   Both Statement I and Statement II are false.
4. D.
   Statement I is correct but Statement II is false.

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1. A.
   $\tan^{- 1}\left( \sqrt{\frac{3}{2}} \right)$
2. B.
   $\tan^{- 1}(\sqrt{6})$
3. C.
   $\tan^{- 1}\left( \sqrt{\frac{2}{3}} \right)$
4. D.
   $\tan^{- 1}\left( \sqrt{\frac{1}{2}} \right)$

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

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1. A.
   $2:1$
2. B.
   $8:3$
3. C.
   $1:3$
4. D.
   $27:16$

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