RAJASTHAN ­ PET Rajasthan PET Solved Paper-2005

  • question_answer
    The thickness of glass strip is t and refractive index n. If velocity of light in vacuum is c, then minimum time in cross the strip by light will be

    A)  \[\frac{ct}{n}\]

    B)  \[\frac{nt}{c}\]

    C)  \[nct\]

    D)  \[\frac{nc}{t}\]

    Correct Answer: B

    Solution :

     The travelling distance by light\[=nt\] The taken time by light\[=\frac{nt}{c}\]


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