Question

(a) Give one use each of a concave and a convex mirror.

(b) State two differences between a convex and a concave lens.​

Answer 1

1. Concave mirrors are used by the dentist to see the enlarged image of the patient's teeth. Convex mirror is used as a side view mirror of the car because it enables the driver to view objects spread over a large area behind him/her
2. Convex lens is thicker in the middle while concave lens is thinner in the middle. A convex lens converges the light rays falling on it, while a concave lens diverges the light rays falling on it.

Answer 2

Answer:

• Concave mirrors are used by the dentist to see the enlarged image of the patient's teeth. Convex mirror is used as a side view mirror of the car because it enables the driver to view objects spread over a large area behind him/her.

• Convex lens is thicker in the middle while concave lens is thinner in the middle. A convex lens converges the light rays falling on it, while a concave lens diverges the light rays