Question

Mention 20 uses of concave and convex mirrors or lens.

Answer 1

2uses of concave mirror are-- 1.It is used in headlights of vehicles, to get a powerful beam of light. 2.It is used to view large size of tooth

Answer 2

Uses of Convex Lenses

1.Uses in spectacles to correct the defect of vision called hypermetropia or long sightedness

2.Used for making a simple camera

3.Used as magnifying glasses

4.Used in microscopes, telescopes, film projectors, etc.

Uses of Concave Lenses

1.Concave lenses are used for correcting myopia or short-sightedness.

2.Concave lenses are used on flashlights to magnify the light produced by the bulb.

3.Used in peepholes of house doors for security to provide a view of people or objects outside the doors.

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