You have two lenses A and B of focal lengths +10 cm and -10 cm respectively. state the nature and power of each lens. whicj of the two lenses will form a virtual and magnified image of an object placed 8 cm from the lens ? draw a ray diagram to justify the answer.



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The lens giving positive focal length is convex - power positive
The lens giving negative is concave-power negative
Convex lens will give magnified and virtual image 8cm from the lens

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