NEET Physics Ray Optics and Optical Instruments Questions Solved


(a) Draw a ray diagram of an astronomical telescope for the final image formed

      at least distance of distinct vision?

(b) An astronomical telescope has an angular magnification of magnitude 5 for

      distant objects. The separation between the objective and eye piece is 36

      cm and the final images is formed at infinity. Calculate the focal length of

      the objective and the focal length of the eye piece?


(a)  Diagram (2) + labelling 12


(b)    m=fo/fe           12

            fo=5fe               12            L=fo+fe            12            fe=36/6=6 cm 12            fo=30 cm             12

Difficulty Level:

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