Question

Which of the following statements are correct?

$\left(A\right)$ Electric monopoles do not exist, whereas magnetic monopoles exist.

$\left(B\right)$ Magnetic field lines due to a solenoid at its ends and outside cannot be completely straight and are confined.

$\left(C\right)$ Magnetic field lines are completely confined within a toroid.

$\left(D\right)$ Magnetic field lines inside a bar magnet are not parallel.

$\left(E\right)$ $\chi =-1$ is the condition for a perfect diamagnetic material, where $\chi$ is its magnetic susceptibility.

Choose the correct answer from the options given below.

• A. $\left(B\right)$ and $\left(C\right)$ only
• B. $\left(B\right)$ and $\left(D\right)$ only
• C. $\left(C\right)$ and $\left(E\right)$ only
• D. $\left(A\right)$ and $\left(B\right)$ only

Answer 1

The correct option is C $\left(C\right)$ and $\left(E\right)$ only

We know that,

$\left(A\right)$ Electric monopoles exist, while magnetic monopoles do not exist.

$\left(B\right)$ Magnetic field lines due to a solenoid at its ends and outside cannot be completely straight and confined.

$\left(C\right)$ Magnetic field lines are confined within a toroid.

$\left(D\right)$ Magnetic field lines inside a bar magnet are parallel.

$\left(E\right)$ For perfectly diamagnetic material $\chi =-1$.

$\therefore$ Statements $\left(C\right)$ and $\left(E\right)$ are correct.