Question
According to the ray diagram rule for lenses, a ray parallel to the principal axis, after refraction from a concave lens, appears to diverge from the
principal focus on the same side of the lens as the incoming ray
principal focus on the far side of the lens
optical centre only
centre of curvature
Detailed Explanation
The chapter states this ray, after refraction from a concave lens, appears to diverge from the principal focus located on the same side of the lens.