Ferromagnetic domains: behaviour in a field and on heating past the Curie temperature

1. A.
   decrease in size and changes orientation.
2. B.
   may increase or decrease in size and change its orientation.
3. C.
   increase in size but no change in orientation.
4. D.
   have no relation with external magnetic field.

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1. A.
   a macroscopic region with consecutive magnetic dipoles oriented in opposite direction.
2. B.
   a macroscopic region with zero magnetization.
3. C.
   a macroscopic region with saturation magnetization.
4. D.
   a macroscopic region with randomly oriented magnetic dipoles.

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1. A.
   1
2. B.
   2
3. C.
   Both 1 and 2
4. D.
   Can't say

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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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