Answer the following question about the attached diagram:
1) will the image form at a or b?
2) will the image be erect or inverted?
3) will the image be enlarged, diminished, or the same size?
4) what kind of mirror is this?

1) Image is formed at B

2) The image is an inverted real image

3) The image is a diminished image

4) The mirror is a concave mirror.

Explanation:

According to the diagram, object placed at this point in front of the curved mirror (concave) is placed beyond the center of curvature of the mirror.

To form images by an object placed in front of a curved mirror, ray diagrams are used.

According to the diagram, the first ray from the object incidented on the mirror and parallel to the principal axis converges at the focus (f) after reflection. The second incident ray pass through the focus and then reflect back with reflected ray parallel to the principal axis.

The two reflected ray intersects back at a point B according to the diagram and the image will be formed at that point B with the image head pointing towards the point of intersection.

According to the diagram above, the image will be formed at B and the nature of the image will be inverted, real, diminished (smaller than the object) and formed between the center of curvature and the focus of the mirror.

The mirror in the diagram is a concave mirror since the plane surface of the mirror is bent inwards.

freezing

deposition

condensation

explanation;

melting also called fusion is the process where solid becomes liquid, sublimation is the process where solid becomes gaseous without first changing to liquid, deposition involves change from gaseous to solid state, freezing involves change from liquid to solid, boiling or evaporation involves change of liquid to gaseous state, while condensation is the change from gaseous state to liquid state.

endothermic reactions involves absorption of heat from the surroundings or the environment while exothermic reactions involves loss of heat energy to the surroundings.

in this case, sublimation, evaporation and melting are endothermic reactions (gain energy from the environment) while, freezing, deposition and condensation are exothermic (loss of energy to the surroundings) reactions.