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J & K CET Medical J & K - CET Medical Solved Paper-2013

  • question_answer
    The distance of moon form the earth is \[3.8\times {{10}^{5}}\]km. Supposing that the eye is most sensitive to the light of wavelength 550 nm, the separation of two points on the moon that can be resolved by a 500 cm telescope is

    A)  50 m               

    B)  55 m

    C)  51 m               

    D)  60 m

    Correct Answer: B

    Solution :

     Resolving power\[=\frac{D}{1.22\lambda }\] Given, \[D=3.8\times {{10}^{5}}km=3.8\times {{10}^{8}}m\] \[\lambda =550\,nm=550\times {{10}^{9}}m\] \[\Rightarrow \] \[RP=\frac{3.8\times {{10}^{8}}}{1.22\times 550\times {{10}^{9}}}\approx 55\,m.\]


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