electromagnetic-waves Question 10

Question: Q. 7. Write the expression for speed of electromagnetic waves in a medium of electrical permittivity ε and magnetic permeability μ. U [Foreign I, II, III 2017]

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Solution:

Ans. Formula

(1)c=1με

Alternatively,

(1)c=1μ0μrε0εr

[CBSE Marking Scheme 2017]



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