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S is the surface of a lump of magnetic material.
A. Lines of B are necessarily continuous across S.
B. Some lines of B must be discontinuous across S.
C. Lines of H are necessarily continuous across S.
D. Lines of H cannot all be continuous across S.

Answers (1)

The correct answer are the options (a, d)
Magnetic field lines form continuous closed loops. Magnetic intensity varies for inside and outside the lump.

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