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The concave mirror is used in the vehicle so that the driver is aware of the vehicle coming from behind. This point is the focus of the convex mirror. If these reflected rays are extended behind the mirror by dotted lines, they meet at a point. For this reason, a convex mirror is also a diverging mirror too. When parallel rays of light strike the mirror, they are reflected in a way wherein they spread out or diverge. These mirrors are “always” form virtual, erect and diminished regardless of the distance between the object and mirror.

The convex mirror has a reflective surface that curves outward. You can download Ray Optics and Optical Instruments Cheat Sheet by clicking on the download button belowĪ concave mirror is also known as the converging mirror as in these type of mirrors light rays converge at a point after they strike and are getting reflecting back from the reflecting surface of the mirror.

Refraction at Spherical Surfaces and by Lenses.

Some Natural Phenomenon due to Sunlight.

Focal Length: It is on the axis of a mirror where rays of light are parallel to the axis converge after reflection or refraction.īrowse more Topics under Ray Optics And Optical Instruments.

Principal axis: An imaginary line passing through the optical center and the center of curvature of the spherical mirror.

Focus: It is any point, where light rays parallel to the principal axis, will converge after reflecting from the mirror.

Pole (p): Pole is the midpoint of a mirror.

Aperture: It is a point from which the reflection of light actually happens.

Center of Curvature (r): The Center of Curvature of a spherical mirror is the point in the center of the mirror which passes through the curve of the mirror and has the same tangent and curvature at that point.

The radius of Curvature (c): It is the distance between Pole and the Center of curvature.

Let us first understand the terms of spherical mirrors.

The moment you get the spoon closer you get a magnified image and when taken far, you see an inverted image.ĭo you know what’s really happening? To understand what is happening lets us talk about the special class of mirrors known as spherical mirrors. You look yourself in the spoon and you notice that you look pretty funny.

Suppose you are sitting at the dining table and you don’t like the food, you start playing with the spoon.