Question

Write down any two applications of a concave mirror. Draw ray diagram for the image formation by a concave mirror when the object is (a) in between infinity and centre of curvature, (b) in between focus and pole of the mirror.

Hint:

The nature and size of the image formed by a concave mirror depend on the position of the object relative to the mirror's focal point and center of curvature.

Answer 1

Applications of Concave Mirror:
1. Used in shaving mirrors: Concave mirrors are used in shaving mirrors as they provide an enlarged image of the face, making it easier to shave. 2. Used in headlights of vehicles: Concave mirrors are used in the headlights of vehicles to focus the light into a parallel beam.
Ray Diagrams for Image Formation by Concave Mirror:

(a) When the object is between infinity and centre of curvature:
When the object is placed at a distance greater than the centre of curvature (C), the image formed is real, inverted, and diminished. It is formed between the focal point (F) and the centre of curvature (C).

(b) When the object is between focus and pole of the mirror:
When the object is placed between the focus (F) and the pole (P) of the mirror, the image formed is virtual, erect, and magnified. The image appears to be behind the mirror.

Conclusion:
Concave mirrors are used for various applications like in shaving mirrors and headlights. The image formation depends on the position of the object relative to the mirror.