Which One of The Following Statements is Correct?
- The image formed by a concave mirror for an object lying at infinity is at the principal focus, highly diminished, real and inverted
- A ray of light parallel to the principal axis after reflection from a concave mirror appears to diverge from the principal focus of the mirror.
- The focus length of a spherical mirror is double of its radius of curvature
- A ray of light travelling from a rarer medium to a denser medium bends away from the normal.