Ray diagram of concave mirror when object is at infinity

To draw a ray diagram of a concave mirror when an object is at infinity, we must follow the rules for making a ray diagram of a concave mirror.

Steps to draw to ray diagram

   1.   Draw the diagram of a concave mirror

   2.   Place the object at the given position

   3.   Follow the rules for making a ray diagram

 

Draw the diagram of a concave mirror

Place the object at the given position

 We have to place an object at infinity. In this condition, the sun or a star is at infinity from the concave mirror.

Rules for making ray diagram

All the light rays from the object at infinity come parallel to the principal axis.

These rays go through the Focus point after reflection.

So the image is formed at the Focus point.

Position of image	At Focus point (F)
Nature of image	Real and inverted
Size of image	Highly diminished

For object at infinity, watch the video from 19.50min. The topic has been explained in both Hindi and English languages.

Related Topics

1. Object beyond C

2. Object at C

3. Object between C and F

4. Object between F and P

Image formation by convex mirror

1. Object between infinity and mirror

2. Object at infinity