Which of the following lenses would you prefer to use while reading small letters…

PHYSICS · Single correct · CBSE · Physics · Ray Optics and Optical Instruments · Ray Optics and Optical Instruments

Problem

6. Which of the following lenses would you prefer to use while reading small letters found in a dictionary? (a) A convex lens of focal length 50 cm . (b) A concave lens of focal length 50 cm . (c) A convex lens of focal length 5 cm . (d) A concave lens of focal length 5 cm .

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