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Manipal Engineering Manipal Engineering Solved Paper-2011

  • 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 = \[\frac{4}{3}\])

    A)  9 cm                     

    B)         12 cm

    C)  3.8 cm                 

    D)         3 cm

    Correct Answer: D

    Solution :

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


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