JEE Class main Answered
S is the surface of 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
Asked by bhuvanshetty1340 | 02 May, 2020, 19:18: PM
Expert Answer
Magnetic field lines for magnetic induction (B) form continuous lines, thus, lines of magnetic field (B) are necessarily continuous across S.
Also, magnetic intensity (H) to magnetise varies from inside and outside thelump. Thus, the line of H cannot all be continuous across S.
Thus, Option (a) and (d) both are correct.
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