# What are the rules for convex mirror?

## What are the rules for convex mirror?

For a convex mirror, if the object is at infinity the image will be a dot on the focal point. As the object moves from infinity toward the mirror, the image moves along the principal axis toward the mirror. When the object is right next to the mirror, the image will be right next to the mirror on the other side.

### What happens when a light ray hits a convex mirror?

When parallel light rays hit a convex mirror they reflect outwards and travel directly away from an imaginary focal point (F). Each individual ray is still reflecting at the same angle as it hits that small part of the surface.

#### What are the three rules of reflection for a curved mirror?

The three laws of reflection

• The angle between the incident ray and the normal is equal to the angle between the reflected ray and the normal.
• The incident ray, the normal and the reflected ray are all in the same plane.
• Incident ray and refracted ray are on different sides of the normal.

What are the rules of ray of light?

Rule 1: After reflection, a ray of light parallel to the principal axis appears to be coming from focus. Rule 2: A ray of light going towards centre of curvature is reflected back along the same path. Rule 3: After reflection, a ray of light going towards the focus becomes parallel to the principal axis.

What are the 4 rules of concave mirror?

Rules for Obtaining Images Formed by a Concave Mirror

• A ray coming parallel to the principal axis is reflected through the principal focus of the concave mirror.
• The ray of light passing the principal focus becomes parallel to the principal axis after being reflected from the mirror.

## When a light ray is directed towards the principal focus of a convex mirror?

 (ii) a ray which is directed towards the principal focus of a convex mirror, after reflection, will emerge parallel to the principal axis. Here also i=r.  (iii) a ray directed in the direction of the centre of curvature of a convex mirror, after reflection, is reflected back along the same path.

### Do convex mirrors spread light?

Light diverges (spreads out) after reflection from a convex mirror. With a flat mirror light bounces off at the same angle that it hits it at; a convex mirror spreads light rays out.

#### What happen to light rays as it passes through a concave and convex mirror?

Light goes through, and is refracted by, a lens. A concave mirror converges light to a focal point. For lenses, light converges to a point for a convex lens. A convex mirror diverges light, as does a concave lens.

What is the 3rd law of reflection?

Answer: The third law of reflection states that the incident ray , the reflected ray and the normal to surface of the mirror all lie on the same plane.

How many rules does a convex lens have?

To draw these ray diagrams, we will have to recall the three rules of refraction for a double convex lens: Any incident ray traveling parallel to the principal axis of a converging lens will refract through the lens and travel through the focal point on the opposite side of the lens.

## Do convex mirrors obey the law of reflection?

These four rays will each reflect according to the law of reflection. After reflection, the light rays diverge; subsequently they will never intersect on the object side of the mirror. For this reason, convex mirrors produce virtual images that are located somewhere behind the mirror.

### How many rules are there in concave mirror?

The simpler method relies on two rules of reflection for concave mirrors. They are: Any incident ray traveling parallel to the principal axis on the way to the mirror will pass through the focal point upon reflection.