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Physics-

General

Easy

Question

The velocity of an electromagnetic wave in a medium is $2 cross times 10 to the power of 8 end exponent m S to the power of negative 1 end exponent$ If the relative permeability is 1 the relative permittivity of the medium is $open parentheses C subscript 0 end subscript equals 3 cross times 10 to the power of 8 end exponent m S to the power of negative 1 end exponent close parentheses$

2.25
1.5
4/9
2/3

The correct answer is: 2.25

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