Question

Write the uses of concave lenses.

Answer 1

• Used in spectacles to correct nearsightedness (myopia).
• Fitted in door peepholes to provide a wide, upright view of the outside.
• Placed in flashlights and torches to spread light over a larger area.
• Used as eyepieces in some telescopes to keep the final image upright.
• Combined with other lenses in cameras to reduce optical distortions.