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(a) Two lenses have power of (i) + 2 D (ii) −4 D. What is the nature and focal length of each lens?(b) An object is kept at a distance of 100 cm from each of the above lenses. Calculate the (i) image distance (ii) magnification in each of the two cases. |
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Answer» (a) Two lenses have power of (i) + 2 D (ii) −4 D. What is the nature and focal length of each lens? (b) An object is kept at a distance of 100 cm from each of the above lenses. Calculate the (i) image distance (ii) magnification in each of the two cases. |
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