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प्रश्न
Write the uses of concave lenses.
लघु उत्तर
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उत्तर
- 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.
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