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If c is the speed of electromagnetic wav...

If c is the speed of electromagnetic waves in vacuum, its speed in a medium of dielectric constant K and relative permeability ` mu _r` is:

A

` v= (1 )/(sqrt (mu_rK))`

B

` v = c sqrt ( mu_r K)`

C

` v= - ( c )/( sqrt ( mu_rK))`

D

` v= (K)/(sqrt (mu _r c ))`

Text Solution

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The correct Answer is:
C
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