An electromagnetic wave of intensity 
enters in a medium of refractive index 
' without any loss. The ratio of the magnitudes of electric fields, and the ratio of the magnitudes of magnetic fields of the wave before and after entering into the medium are respectively, given by:
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
C
JEE Main 2019
The speed of electromagnetic wave in free space is given by
… ..(i)
In medium, 
Dividing equation 
by 
, we get
intensity 
Similarly
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