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Haryana PMT Haryana PMT Solved Paper-2009

  • question_answer
    The focal lengths of the objective and the eye piece of telescope are 100 cm and 10 cm respectively. The magnification of the telescope when final image is formed at infinity is

    A)  0.1                                        

    B)  10

    C)  100                                       

    D)  \[\infty \]

    Correct Answer: B

    Solution :

                     For a telescope, magnification when final image is formed at infinity             \[{{m}_{\infty }}=\frac{{{f}_{o}}}{{{f}_{e}}}\]  \[=\frac{100}{10}=10\]


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