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The central portion of a lens is wrapped in black paper as shown above. An object is placed at 90 cm with the centre of curvature at 40 cm. Find the no. of images formed. |
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Answer»
The central portion of a lens is wrapped in black paper as shown above. An object is placed at 90 cm with the centre of curvature at 40 cm. Find the no. of images formed. |
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