A、I0cos2a/2
B、0
C、I0sin2（2a）/4
D、I0sin2a/4
E、I0cos2a
更多“使一光强为I<sub>0</sub>的平面偏振光先后通过两个偏振片P<sub>1</sub>和P<sub>2</sub>，P<sub>1</sub>和P<sub>2</sub>的偏振化方向与原入射光光矢振动方向的夹角分别是a and 90°，则通过这两个偏振片后的光强I是（）”相关的问题
A、I<sub>0sub>/4 B、√3I<sub>0sub>/4 C、√3I<sub>0sub>/2 D、I<sub>0sub>/8 E、3I<sub>0sub>/8
A、I<sub>5sub>+I<sub>6sub>+I<sub>4sub> =0 B、I<sub>1sub>+I<sub>2sub>－I<sub>3sub> =0 C、I<sub>3sub>－I<sub>5sub>－I<sub>6sub>－I<sub>1sub>－<sub>I2sub> =0 D、I<sub>1sub>+I<sub>2sub>－I<sub>3sub>－I<sub>4sub> =0
A、I<sub>1sub>+I<sub>6sub>－I<sub>4sub> =0 B、I<sub>1sub>－I<sub>2sub>+I<sub>3sub> =0 C、I<sub>3sub>－I<sub>5sub>－I<sub>6sub> =0 D、I<sub>3sub>+I<sub>4sub>－I<sub>2sub>－I<sub>6sub> =0
A、I<sub>csub>+I<sub>bsub>－I<sub>2sub>=0 B、I<sub>csub>－I<sub>bsub>+I<sub>2sub>=0 C、I<sub>csub>+I<sub>bsub>+I<sub>2sub>=0 D、I<sub>csub>－I<sub>bsub>－I<sub>2sub>=0
A、I<sub>bsub>+I<sub>asub>－I<sub>1sub>=0 B、I<sub>bsub>－I<sub>asub>+I<sub>1sub>=0 C、I<sub>bsub>－I<sub>asub>－I<sub>1sub>=0 D、I<sub>bsub>+I<sub>asub>+I<sub>1sub>=0
A、I<sub>1sub>－I<sub>2sub>－I<sub>3sub>－I<sub>4sub> + I<sub>5sub>=0 B、I<sub>1sub>－I<sub>2sub> + I<sub>3sub>－I<sub>4sub>－I<sub>5sub>=0 C、I<sub>1sub>－I<sub>2sub>+ I<sub>3sub> + I<sub>4sub> +I<sub>5sub>=0 D、I<sub>1sub>－I<sub>2sub> + I<sub>3sub>－I<sub>4sub> + I<sub>5sub>=0
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