How to Draw Ray Diagram of Concave Mirror

For a Concave mirror, object tin be kept at different positions

Hence, we have dissimilar cases

Example 1 - Object is Placed at infinity

In this Case, Object AB is kept far away from mirror (about at infinite altitude)

So, nosotros draw rays parallel to principal axis

Since ray parallel to primary axis passes through the Focus

Both rays come across at focus subsequently reflection

Hence, Epitome is formed at Focus

And it is very very minor

Nosotros tin can say that

• Paradigm is in Front of the Mirror (Real Image)
• Image is Inverted
• Image is Smaller than the Object (Highly Diminished)

Case 2 - Object is beyond Center of Curvature (C)

Hither, Object AB is beyond C

First, we depict a ray parallel to principal centrality

So, information technology passes through focus later on reflection

We draw some other ray which passes through Center of Curvature

And then, the ray volition go back along the same path afterwards reflection

Where both reflected rays meet is point A'

And the image formed is A'B'

This image is formed between Center(C) and Focus (F)

We can say that

• Image is in Front end of the Mirror (Real Prototype)
• Paradigm is Inverted
• Image is Smaller than the Object (Diminished)

Case 3 - Object is at Center of Curvature (C)

Hither, Object AB is kept at C

First, we describe a ray parallel to principal axis

So, information technology passes through focus after reflection

We draw another ray which passes through Focus

So, the ray will reflect back parallel to the chief axis

Where both reflected rays encounter is indicate A'

And the image formed is A'B'

This image is formed between at Center(C)

We can say that

• Image is in Front end of the Mirror (Real Epitome)
• Paradigm is Inverted
• Image is exactly the aforementioned size as that of Object

Case iv - Object is between Center of Curvature (C) and Focus (F)

Here, Object AB is kept between C and F

First, we draw a ray parallel to principal axis

So, information technology passes through focus afterward reflection

We depict another ray which passes through Center of Curvature

So, the ray will get back along the same path after reflection

Where both reflected rays run across is point A'

And the image formed is A'B'

This image is formed between beyond Center(C)

We can say that

• Prototype is in Front of the Mirror (Existent Image)
• Prototype is Inverted
• Prototype is larger than the object (Magnified)

Instance 5 - Object is at Focus (F)

Here, Object AB is kept at F

First, nosotros draw a ray parallel to principal axis

And then, it passes through focus afterward reflection

We depict another ray which passes through Heart of Curvature

So, the ray volition become dorsum along the same path after reflection

Nosotros find that both rays are parallel to each other

Hence we can say that they encounter at infinity.

Hence, the rays form an image at infinity

And image formed would be larger than the object

Nosotros can say that

• Prototype is in Front of the Mirror (Real Image)
• Image is Inverted
• Epitome is larger than the object (Magnified)

Case half dozen - Object is between Pole (P) and Focus (F)

Here, Object AB is kept between P and F

Offset, we draw a ray parallel to principal axis

So, it passes through focus after reflection

Nosotros draw some other ray which passes through Center of Curvature

So, the ray volition go back along the same path after reflection

Nosotros find that both reflected rays are diverging

It means that they would have met at some betoken

Hence, nosotros extend both reflected rays backside the mirror

We see that the rays form an image behind the mirror.

So, the image is virtual

And image formed would be larger than the object

Nosotros tin can say that

• Paradigm is backside the Mirror (Virtual Image)
• Image is cock
• Paradigm is larger than the object (Magnified)

Annotation: -
Real image is formed in front of mirror

Virtual Image is formed behind the mirror

And,

Inverted image is upside downward

Erect paradigm is straight

To summarize

Position of the object	Position of the epitome	Size of the image	Nature of the image
At infinity	At the focus F	Highly diminished, point-sized	Real and inverted
Across C	Betwixt F and C	Diminished	Real and inverted
At C	At C	Aforementioned size	Real and inverted
Between C and F	Beyond C	Enlarged	Real and inverted
At F	At infinity	Highly enlarged	Existent and inverted
Between P and F	Behind the mirror	Enlarged	Virtual and erect

Questions

Question 3 Page 168 - Name a mirror that can give an erect and enlarged image of an object

View Answer

NCERT Question 2 - The epitome formed by a concave mirror is observed to be virtual, cock and larger than the object. Where should be the position of the object?

(a) Between the principal focus and the centre of curvature

(b) At the centre of curvature

(c) Beyond the center of curvature

(d) Between the pole of the mirror and its main focus.

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How to Draw Ray Diagram of Concave Mirror

Source: https://www.teachoo.com/10826/3118/Concave-Mirror---Ray-diagram/category/Concepts/

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