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प्रश्न
What is the nature of a lens having a power of + 0.5 D?
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उत्तर
Positive sign indicates it is a converging lens. Therefore, the lens is convex.
संबंधित प्रश्न
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The optician's prescription for a spectacle lens is marked +0.5 D. What is the:
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Assertion and reasoning type
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