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WB JEE Medical WB JEE Medical Solved Paper-2007

  • question_answer
    A fish at a depth of 12 cm in water is viewed by an observer on the bank of a lake. To what height the image of the fish is raised? (Refractive index of lake water = 4/3)

    A)  9 cm                                     

    B)  12cm

    C)  3.8 cm                                 

    D)  3 cm

    Correct Answer: D

    Solution :

                     Apparent rise \[=d\left( 1-\frac{1}{{{\,}_{a}}{{\mu }_{w}}} \right)\] \[=12\times \left( 1-\frac{3}{4} \right)\] \[=12\times \frac{1}{4}=3\,\text{cm}\]


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