AIIMS AIIMS Solved Paper-2003

  • question_answer
    An astronaut is looking down on earths surface from a space shuttle at an altitude of 400 km. Assuming that the astronauts pupil diameter is 5 mm and the wavelength of visible light is 500 nm, the astronaut will be able to resolve linear objects of the size of about:

    A)  0.5 m      

    B)                        5 m                       

    C)        50 m                                    

    D)  500 m

    Correct Answer: C

    Solution :

    For wavelength \[\lambda ,\,d\] the diameter of eye lens and D the distance from the lens at which light is focussed, the resolving power is given by \[{{T}_{2}}>{{T}_{1}}\] Given, \[3q/{{\varepsilon }_{0}}\] \[2q/{{\varepsilon }_{0}}\] \[q/{{\varepsilon }_{0}}\]   \[\beta \] \[x\]


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