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Which of the following (referred to a spherical mirror) do (does) not depend on whether the rays are paraxial or not?
Pole, radius of curvature and principle axis of the spherical mirror are independent on whether the rays are paraxial or not. Only focus depends on the kind of rays.
Hence, option A, C and D are correct.
Consider three converging lenses L1, L2 and L3 having identical geometrical construction. The index of refraction of L1 and L2 are μ1 and μ2 respectively. The upper half of the lens L3 has a refractive index μ2 (figure 18-Q3). A point object O is imaged at O1 by the lens L1 and at O2 by the lens L2 placed in same position. If L3 is placed at the same place,