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प्रश्न
Identify the device used as a spherical mirror or lens in following case, when the image formed is virtual and erect in case.
Object is placed between infinity and device, image formed is diminished and between focus and optical centre on the same side as that of the object.
उत्तर
The device is Concave lens.
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संबंधित प्रश्न
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Draw a diagram to show how a converging lens focusses parallel rays of light?
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What is the nature of lens A?
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The power of a concave lens is 10 D and that of a convex lens is 6 D. When these two lenses are placed in contact with each other, the power of their combination will be :
(a) +16 D
(b) +4 D
(c) −16 D
(d) −4 D
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Explain the working of an astronomical telescope using refraction of light.
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