The correct answer is: B. Makes an angle equal to critical angle with the axial ray
A meridional ray is a ray of light that passes through the center of the lens. The critical angle is the angle of incidence at which light traveling from a denser medium to a less dense medium is totally internally reflected.
After total internal reflection, the meridional ray will make an angle equal to the critical angle with the axial ray. This is because the meridional ray is traveling from a denser medium (the glass) to a less dense medium (the air). The critical angle is the angle of incidence at which light traveling from a denser medium to a less dense medium is totally internally reflected.
The other options are incorrect because:
- Option A is incorrect because the acceptance angle is the angle of incidence at which light is still able to pass through the lens. The critical angle is smaller than the acceptance angle.
- Option C is incorrect because the meridional ray does not travel parallel to the axial ray after total internal reflection.
- Option D is incorrect because the meridional ray does not make an angle equal to the acceptance angle with the axial ray after total internal reflection.