Question

How many minimum number of rays required for locating the image formed by a concave mirror for an object. Draw a ray diagram to show the formation of a virtual, erect and enlarged image by a concave mirror.​

Answer 1

1. Question:

How many minimum number of rays required for locating the image formed by a concave mirror for an object?

Answer:

Minimum number of rays required for locating the image formed by a concave mirror for an object is 2.(Also see the attachment).

Rules for drawing a ray diagram

1. To draw a ray diagram, take at least two rays for convenience, which originate from the same point on the object and whose route can be traced after reflection.
2. Always keep the object on the left side in front of the reflecting surface.
3. Always place the object vertically upright so that it is perpendicular to the principal axis.

_____________________________

2. Question:

Draw a ray diagram to show the formation of a virtual, erect and enlarged image by a concave mirror.

Answer:

See the attachment for diagram.