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JEE Main & Advanced Sample Paper JEE Main Sample Paper-18

  • question_answer
    A plane mirror is placed at the bottom of a tank containing a liquid of refractive index\[\mu \]. P is a small object at a height h above the mirror. An observer O, vertically above P, outside the liquid sees P and its image in the mirror. The apparent distance between these two will be

    A)  \[2\mu \,h\]                     

    B)  \[2\,h\text{/}\mu \]

    C)  \[2\,h\text{/(}\mu -1)\]                              

    D)  \[h\,\{1+(1\text{/}\mu \}\]

    Correct Answer: B

    Solution :

     Apparent depth of \[P=\frac{d-h}{\mu }\] Apparent depth of its image\[=\frac{d+h}{\mu }\] \[\therefore \] Required difference\[=2h\text{/}\mu \]


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