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Speed of electromagnetic wave in a medium of in_(r )=1.3 and mu_(r )=2.14 is ……. . |
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Answer» `3.6xx10^(8)m//s` `therefore v=(c )/(n)` but `n = sqrt(mu_(r )in_(r ))` `therefore v=(c )/(sqrt(my_(r )in_(r )))` `= (3xx10^(8))/(sqrt(2.14xx1.3))` `= (3xx10^(8))/(sqrt(2.782))=(3xx10^(8))/(1.67)` `therefore v=1.796xx10^(8)` `therefore v ~~ 1.8 xx 10^(8)m//s` |
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