# How do you solve a plane mirror?

## What are the 4 rules of plane mirror?

The image is laterally inverted. The image is erect. The size of the image is the same as the size of the object. The distance between the image obtained from the mirror is the same as the distance between the object from the mirror.

## How far is your image behind a plane mirror if you are standing 3 meters in front of it?

If you are 3 m in front of the mirror, your reflected image will be located 3 m behind the mirror. Thus, the distance between you and the image will be 6 m.

## What is plane mirror with example?

A plane mirror is a mirror with a flat (planar) reflective surface. For light rays striking a plane mirror, the angle of reflection equals the angle of incidence. The angle of the incidence is the angle between the incident ray and the surface normal (an imaginary line perpendicular to the surface).

## What is the formula of mirror?

Let’s explore the mirror formula (1/f = 1/v+1/u) and see how to locate images without drawing any ray diagrams.

## What is the size of image formed by a plane mirror?

Images in a plane mirror are the same size as the object, are located behind the mirror, and are oriented in the same direction as the object (i.e., “upright”).

## Can plane mirror form real image?

A plane mirror always forms a virtual image of an object, because the image formed by a plane mirror cannot be obtained on the screen.

## What are the five uses of plane mirror?

• Periscopes and kaleidoscopes.
• Torch Lights.
• Looking Glasses.
• Solar Cooker.
• Security.

## Which type of image is formed by plane mirror?

Characteristics of the image formed by a plane mirror: It is virtual, i.e., it is formed behind the mirror without the actual intersection of light rays. It is erect, which means up straight. The image is laterally inverted, i.e., it is reversed from left to right.

## Why are plane mirror images virtual?

In a plane mirror, the image will be the same size as the object and will be the same distance behind the mirror as the object is in front of the mirror. This image is called a virtual image because the light does not actually pass through the image.

## Does light always reflect at 90 degrees?

Translation: A ray of light comes down at an angle and is reflected off a surface, for example a mirror. From that point we can imagine a line straight up, at 90 degrees to the surface, called the normal. The angle of reflection is measured from the normal, which is 0 degrees, to the ray of reflected light.

## What is the magnification of the images formed by plane mirror and why?

Since the size of the image formed by a plane mirror is equal to the size of the object, its magnification is always 1.

## How many types of plane mirrors are there?

The Plane Mirror can be polished with various materials that can be used for various purposes but all the mirrors function the same way regardless of their constructing material. According to their reflection of light, they can be classified into 3 types: concave, convex, and Plane Mirror.

## Who Discovered plane mirror?

The silvered-glass mirrors found throughout the world today first got their start in Germany almost 200 years ago. In 1835, German chemist Justus von Liebig developed a process for applying a thin layer of metallic silver to one side of a pane of clear glass.

## What is the focal length of plane mirror?

A plane mirror is a flat reflecting surface. Thus, in the case of a plane mirror, when the parallel rays of light strike the mirror they get reflected back parallel to each other. So, they never meet or we can say they meet at infinity. So, the focal length of the plane mirror is Infinity.

## What is U and V in mirror?

The distance between the object and the pole of the mirror is called Object distance(u). The distance between the image and the pole of the mirror is called Image distance(v). The distance between the Principal focus and the pole of the mirror is called Focal Length(f).

## What is the distance of the image from the mirror?

The image distance always equals the object distance. The size of the image is the same as the object (the mirror does not magnify the image).

## What type of image is formed?

A real image is formed when the rays from the reflection of light meet or converge at a single point on the other side of the lens. This means that, the image being formed actually exists since the rays are converging.

## What are the two laws of reflection?

Laws of reflection are: (i) The incident ray, the reflected ray and the normal ray at the point of incidence, lie in the same plane. (ii) The angle of incidence is equal to the angle of reflection.

## What is the state law of reflection?

Law of reflection is defined as: The principle when the light rays fall on the smooth surface, the angle of reflection is equal to the angle of incidence, also the incident ray, the reflected ray, and the normal to the surface all lie in the same plane.

## Does a plane mirror have a focal point?

A focal ‘point’ implies a convergence of light rays to some point in space whether it be a real or virtual point. And convergence of either transmissive or reflective optics requires curvature in the optics – so for plane mirrors, no there is no focal point that can occur by reflected light.

## What would happen if plane mirrors are not invented?

Answer: Periscopes and Kaleidoscopes would not get invented as plane mirror is used in the instruments. If plane mirror were not invented then road accidents would have been a common phenomenon because plane mirror is used in headlights,rearview mirrors of vehicles and also in blind turns of busy roads.

## What are 3 types of mirrors?

• Plane mirror: The images formed from a plane mirror are the reflected images in their normal proportions but reversed from left to right.
• Convex mirror: These are the spherical mirrors that are curved outward and the image obtained is virtual, diminished and erect for a real object.
• Concave mirrors:

## What is the power of a plane mirror?

Plane mirrors have zero power.