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  3. BCECE Medical

BCECE Medical BCECE Medical Solved Papers-2009

  • question_answer
    A convex lens of glass \[(\mu =1.5)\] has a focal length of 8 cm when placed in air. What is the focal length of lens when it is immersed in water \[\left( \mu =\frac{4}{3} \right)\]?

    A)  4 cm           

    B)  8 cm

    C)  16cm          

    D)  32cm

    Correct Answer: D

    Solution :

    \[{{f}_{water}}=4\times {{f}_{air}}\] \[=4\times 8=32\,cm\]


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