Which of the following statements are correct | vedclass

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(D) Statement $(A)$ is incorrect because electric monopoles (charges) exist,but magnetic monopoles do not exist.Statement $(B)$ is correct because mag

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$(B)$ and $(C)$ only

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(D) Statement $(A)$ is incorrect because electric monopoles (charges) exist,but magnetic monopoles do not exist.Statement $(B)$ is correct because magnetic field lines of a solenoid must form closed loops,so they cannot be perfectly straight and confined outside the solenoid.Statement $(C)$ is correct because,in an ideal toroid,the magnetic field is zero outside and completely confined within the core.Statement $(D)$ is incorrect because the magnetic field lines inside a bar magnet are parallel and uniform.Statement $(E)$ is correct because for a perfect diamagnetic material,the relative permeability $\mu_r = 0$,and since $\mu_r = 1 + \chi$,we get $\chi = -1$.Therefore,statements $(B)$,$(C)$,and $(E)$ are correct. However,based on the provided options,the most appropriate choice is $(D)$ $(B)$ and $(C)$ only,though $(E)$ is also scientifically correct.

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