For an axially translating spherical mirror, which statements are correct in the non-relativistic paraxial approximation?

Select all that apply

• Option A

  The focal length is unchanged in the mirror's instantaneous frame.

• Option B

  Use object velocity relative to the mirror for differentiating the mirror formula.

• Option C

  Transform the resulting image velocity back to the laboratory frame.

• Option D

  The axial velocity amplification magnitude is (v/u)².