Flashcards for:
Lecture on Reflection of Light

A real image is formed by the actual intersection of reflected rays and can be captured on a screen, while a virtual image is formed by the apparent divergence of reflected rays and cannot be captured on a screen.

Reflection is the bouncing back of light rays when they strike a polished surface.

Regular reflection occurs on smooth surfaces and results in clear reflected rays, while irregular (diffuse) reflection occurs on rough surfaces and scatters light in various directions.

The principal focus of a concave mirror is the point where parallel rays of light converge after reflecting from the mirror.

The center of curvature is the center of the sphere from which the mirror segment is taken.

The two types of reflection are regular reflection and irregular (diffuse) reflection.

A virtual image is formed by the apparent divergence of reflected rays and cannot be captured on a screen. It is commonly formed in plane mirrors.

Concave mirrors are used in devices like torches and headlights because they can focus light beams to a point, producing a strong, directed light.

Lateral inversion is the phenomenon where the left and right sides are reversed in the image formed by a plane mirror.

The angle of incidence is the angle between the incident ray and the normal at the point of incidence.

The number of images formed by two inclined mirrors is related by the formula (360°/θ - 1), where θ is the angle between the mirrors.

A concave mirror has a reflective surface that curves inward like a spoon's inner surface and can form real and inverted images, whereas a convex mirror curves outward like a spoon's outer surface and always forms virtual, upright, and diminished images.

The law of reflection states that the angle of incidence (i) equals the angle of reflection (r).

Convex mirrors are used in vehicle side mirrors because they provide a wider field of view, allowing drivers to see more area behind them.

The focal length of a mirror is the distance between the pole of the mirror and its principal focus.