2. Solved Papers
  3. CEE Kerala Engineering

CEE Kerala Engineering CEE Kerala Engineering Solved Paper-2002

  • question_answer
    A telescope has an objective of focal length 50 cm and an eye-piece of focal length 5 cm. The least distance of distinct vision is 25 cm. The telescope is focussed for distinct vision on a scale 200 cm away. The separation between the objective and the eye-piece is:

    A)  75 cm                                  

    B)  60 cm  

    C)  71 cm                  

    D)         74 cm

    E)  65 cm

    Correct Answer: C

    Solution :

    \[\frac{1}{{{v}_{o}}}+\frac{1}{200}=\frac{1}{50}\Rightarrow {{v}_{o}}=\frac{200}{3}=66.6\,cm\] \[\therefore \] \[L={{v}_{o}}+{{f}_{e}}=66.6+5\approx 71\,cm\]


You need to login to perform this action.
You will be redirected in 3 sec spinner