[单选题]
When the transmission axes of two Polaroid fil;dnufj29j,qq0trqb lo sse7c m;ro j18 /5yz3 ms are perpendicular kwqep )1sd1p*3,/aa + e)9dsl ) qjj3cmzwlz hto each other, what is the percentage),)9/kjeq dc)pedpa13 3sa smzwz*1jwqh l l+ of the incident light which will pass the two films?
