Q. Which of the following are the cases of use of concave mirrors? Answer:
All of the above
Notes: Concave mirrors are commonly used: 1. in torches, search-lights and vehicles headlights to get powerful parallel beams of light. 2. as shaving mirrors to see a larger image of the face. 3. by dentists to see large images of the teeth of patients. 4. to concentrate sunlight to produce heat in solar furnaces.