A rigid body has charge density everywhere proportional to mass density with constant ratio Q/M and rotates non-relativistically about a fixed axis. Which statements are correct?

Select all that apply

• Option A

  Its magnetic moment is proportional to its angular momentum.

• Option B

  The ratio μ/L can be independent of angular speed.

• Option C

  Reversing rotation reverses both μ and L.

• Option D

  The ratio μ/L must depend on the size of the body.