?.ar moving \"S.m. Th the waves emited bry the n and those that eedbkn the speed

Question

?.ar moving "S.m. Th the waves emited bry the n and those that eedbkn the speeding 970 D) 1048 Ha E)1100 e 6. A linearly polarized electromagnetic wave is sent through two sheets of The first sheet, A. is oriented so the incidene material. with respect s that its transmission axis makes an angle ot 30 electric field of the oriented so that its transmission axis le of 90 with the incident electric field of the wave. The incident beam has an B, is electric field of peak magnitade Es and average intensity So 6.1. What is the peak value of the electric field amplitude afher it goes through sheet A? A) 0.305 B) 050C)060D0.75 8) 0.87E 6.2. What is the average intensity of the wave after it passes through A? A) 0.3$5 B) 0.50% C) 0.60% D) 0.75% E) 087 6.3. What is the average intensity of the wave after it passes through B? A) 0.19 B) 0.34SC)0.43 D)0.50S E) zero 7. The figure shows the time variation of the magnitude of the electric field of an electromagnetic

Explanation / Answer

6.2) D) 0.75*So

SA = So*cos^2(theta)

= So*cos^2(30)

  
= 0.75*So

6.3) A) 0.19*So

SB = SA*cos^2(theta)

= 0.75*So*cos^2(60)

= 0.19*So

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