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Solution


Q.

The ratio of contributions made by the electric field and magnetic field components to the intensity of an electromagnetic wave is (c = speed of electromagnetic waves)   [2020]
1 c : 1  
2 1 : 1  
3 1 : c  
4 1 : c2  

Ans.

(2)

Energy of electromagnetic wave is equally distributed in the form of electric and magnetic field energy, so ratio UEUB=11.