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प्रश्न
Which has more power : a thick convex lens or a thin convex lens, made of the same glass? Give reason for your choice.
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उत्तर
A thick convex lens has more power than a thin one because it has greater curvature or lesser focal length than a thin lens.
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संबंधित प्रश्न
What is meant by a power of a lens? Define its SI unit.
(a) At what distance should the lens be held from the figure in order to view the squares distinctly with the maximum possible magnifying power?
(b) What is the magnification in this case?
(c) Is the magnification equal to the magnifying power in this case? Explain.
What can you see in a completely dark room? If you switch on an electric bulb in this dark room as a light source, explain how you could now see:
(a) the electric bulb
(b) a piece of white paper
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How is the power of a lens related to its focal length?
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(a) What is the nature of lens A and lens B?
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(c) What is the power of combination if lenses A and B are held close together?
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Name the type of lens whose power is positive.
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Show the formation of the image by the sphere.
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