The ray diagram that shows the proper positioning of the image is: the first diagram, where the image is smaller than the object.
What is a concave mirror?
A concave mirror also known as converging mirror is a type of curved or spherical mirror in which the outside surface is silvered and the inner surface is made to reflect.
The size and the nature of the image of this kind of mirror is relatively dependent on the position of the object with regards the mirror.
Analysis:
When the object is behind the centre of curvature, the image is seen to be real, inverted and smaller than the object.
So, the image of the concave mirror increases in size as the object gets closer to the centre of curvature and would be same size as the object at the centre of curvature.
In conclusion, the ray diagram that shows the proper positioning of the image is the first diagram.
Learn more about curved mirrors: brainly.com/question/26257987
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