Table of Contents
Draw the second ray such that it travels exactly parallel to the principal axis. Once these incident rays strike the mirror, reflect them according to the two rules of reflection for convex mirrors. The ray that travels towards the focal point will reflect and travel parallel to the principal axis.
How many ray diagrams does a convex mirror have?
To summarise Position of the object Position of the image Nature of the image At infinity At the focus F, behind the mirror Virtual and erect Between infinity and the pole P of the mirror Between P and F, behind the mirror Virtual and erect.
Why are there only 2 cases in convex mirror?
There are only two possibilities of position of object in the case of a convex mirror, i.e. object at infinity and object between infinity and pole of a convex mirror. Object at infinity: When the object is at the infinity, a point sized image is formed at principal focus behind the convex mirror.
What are the 2 cases of convex mirror?
Rules for Image Formation in a Convex Mirror Rule 1: Rule 2: Rule 3: Rule 4: Case 1: When object is placed at Infinity. Case 2: When object is placed anywhere on the principal axis.
How do you draw a ray diagram for a concave and convex mirror?
Step-by-Step Method for Drawing Ray Diagrams Pick a point on the top of the object and draw two incident rays traveling towards the mirror. Once these incident rays strike the mirror, reflect them according to the two rules of reflection for concave mirrors. Mark the image of the top of the object.
What is the ray diagram of convex lens?
To summarise Position of the object Position of the image Nature of the image At 2F 1 At 2F 2 Real and inverted Between F 1 and 2F 1 Beyond 2F 2 Real and inverted At focus F 1 At infinity Real and inverted Between focus F 1 and optical Center O On the same side of the lens as the object Virtual and erect.
What type of image is formed in convex mirror?
Image formed by a convex mirror is always virtual and erect. When an object is placed at infinity, virtual image is formed at focus and the size of the image is smaller.
How many cases are there for convex mirror?
There are only two possibilities of position of object in the case of a convex mirror, i.e. object at infinity and object between infinity and pole of a convex mirror. Object at infinity: When the object is at the infinity, a point sized image is formed at principal focus behind the convex mirror.
How many ray diagrams are there for concave mirror?
The intersection of these two rays after reflection gives the position of the image of the object. For a concave mirror any of the following four ray diagrams can be used for locating the image formed: a) A ray parallel to the principal axis, after reflection, will pass through the principal focus of a concave mirror.
How many cases are there in convex lens?
There are six possibilities of position of object in the case of convex lens: Object at infinity. Object beyond centre of curvature, C. Object at centre of curvature, C.
What are the rules of concave and convex mirror?
What is the difference between a concave mirror and a convex mirror? Spherical mirrors whose inner side is reflecting are called concave mirrors. Spherical mirrors whose outer side is reflecting are called convex mirrors.
How do convex mirrors work?
A convex mirror or diverging mirror is a curved mirror in which the reflective surface bulges towards the light source. Convex mirrors reflect light outwards, therefore they are not used to focus light. As a result, images formed by these mirrors cannot be projected on a screen, since the image is inside the mirror.
What are the 3 rules for ray diagrams?
Rules for drawing Ray Diagram in Lenses Rule 1 – Ray parallel to principal axis will pass through focus. For a convex lens , Rule 2 – Ray passing through focus will become parallel to principal axis. For a convex lens, Rule 3 – Ray passing through Optical Center will emerge without deviation.
How many rays are required for drawing ray diagrams in convex lens draw any two?
Yet only two of these rays would be needed to determine the image location since it only requires two rays to find the intersection point. Of the five incident rays drawn, three of them correspond to the incident rays described by our three rules of refraction for converging lenses.
What does a double convex lens do?
A double convex lens, or converging lens, focuses the diverging, or blurred, light rays from a distant object by refracting (bending) the rays twice.
What type of images are formed by convex and concave mirrors?
Plane mirrors and convex mirrors only produce virtual images. Only a concave mirror is capable of producing a real image and this only occurs if the object is located a distance greater than a focal length from the mirror’s surface.
What type of image is formed by a convex mirror write two practical uses of convex mirror?
(a) a virtual and erect image is formed. #Convex mirror is used in vehicles. It is widely used as rear view mirror in automobiles and vehicles bcoz it can diverge light rays and forms virtual images. #convex mirror is used in magnifying glasses.
What image does a convex lens form?
A convex lens forms a virtual image when the object is kept between the lens and its focus but the image formed is an enlarged one.
What are the two rays necessary in Ray diagramming?
i) The ray of light that is parallel to the principal axis, it passes through the point F of the concave mirror after its reflection. Ii) The ray of light passing through the point C of the mirror, is reflected back on the same path after reflection from the mirror.
What is the size of the image formed by convex mirror?
The image formed by a convex mirror is of size one-third the size of object .
Why are convex mirrors used as rear view mirrors?
Convex mirrors are used as rear-view mirrors in motor vehicles because they form virtual, erect and diminished images irrespective of distances of the object. Convex mirror helps the driver to view large areas of the traffic behind him and he can easily detect the vehicle coming or running behind him.
Which of the three mirrors is a convex mirror?
Find the position of the image, its nature and size. We are given a convex mirror. A virtual and erect image of height 2.2 cm is formed behind the mirror (because v is positive) at a distance of 8.6 cm from the mirror. An object 5 cm in length is held 25 cm away from a converging lens of focal length 10 cm.
When the object is at infinity in convex mirror?
When The Object is Placed Between Infinity and Pole Position of the object Position of the image Size of the image At infinity At focus, F, behind the mirror Highly diminished and pointed in size Between infinity and pole of the mirror Between P and F, behind the mirror Diminished.
