JEE Main & Advanced Physics Wave Optics / तरंग प्रकाशिकी Question Bank Critical Thinking

  • question_answer
    A wave is propagating in a medium of electric dielectric constant 2 and relative magnetic permeability 50. The wave impedance of such a medium is

    A)            5 W                                           

    B)            376.6 W

    C)            1883 W                                    

    D)            3776 W

    Correct Answer: C

    Solution :

               Wave impedance \[Z=\sqrt{\frac{{{\mu }_{r}}}{{{\varepsilon }_{r}}}}\times \sqrt{\frac{{{\mu }_{0}}}{{{\varepsilon }_{0}}}}\] \[=\sqrt{\frac{50}{2}}\times 376.6=1883\,\Omega \]


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