Ashish sharma Asked a Question
May 31, 2020 12:17 pmpts 29 pts
An equi-convex lens ( = 1.5) is combined with an equi concave lens (u = 1.3). The radii of (A) The combination behaves like a converging lens in medium of refractive index 1.4 and (B) The combination behaves like a converging lens in a medium of refractive index 1.2 as (C) The combination behaves like a diverging lens in medium of refractive index 1.2 as well (D) The combination behaves like a diverging lens in medium of refractive index 1.4 and curvature of all surfaces is the same. (Assume thin lenses) diverging lens in a medium of refractive index 1.6. well as 1.4. as 1 converging lens in a medium of refractive index 1.6. 1.6.
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  • Ashish sharma
    thank u sir
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  • Ghost. Best Answer
    option (b) is correct. for converging lens focal length has to be positive and negative for diverging lens. here i am attaching the solution.
    • cropped122602453.jpg
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