Home » If the power of a lens is – 2 D, what is its focal length? Light MCQs If the power of a lens is – 2 D, what is its focal length? May 2, 2022 38 Views Q. If the power of a lens is – 2 D, what is its focal length?A. +50 cmB. -100 cmC. -50 cmD. +100 cmAnswer: -50 cm
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If a diverging lens is to be used to form an image which is one fourth of the size of the object where must the object be placed?
