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Two thin lenses have a combined power of +10 dioptres.When separated by 20 cm,their equivalent power is +25 dioptres.Their individual powers,in dioptres,are: ?->(Show Answer!)
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1. Two thin lenses have a combined power of +10 dioptres.When separated by 20 cm,their equivalent power is +25 dioptres.Their individual powers,in dioptres,are:





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