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The ratio of contributions made by the electric field and magnetic field components to the intensity of an EM wave is

  1. c ∶ 1
  2. c2 ∶ 1
  3. 1 ∶ 1

Answer (Detailed Solution Below)

Option 3 : 1 ∶ 1

Detailed Solution

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CONCEPT:

The average energy of an electric field is written as;

CALCULATION:

As we know,

Here, 

∴ 

⇒ 

⇒ 

⇒ 

⇒ Electric field,  (magnetic field)

Therefore, ratio 

Hence option 3) is the correct answer.

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