本题目来源于试卷: The Wave Nature of Light，类别为 通用国际物理
[问答题]
Four polarizers are pla3ezkc 8 s.ubw8bf3f8+xuu+m gpl)na 8ced in succession with their axes vertical, at 30$^{\circ}\,$ to the vertical, at 60$^{\circ}\,$ to the vertical, and at 90° to the vertical.
(a) Calculate what fraction of the incident unpolarized light is transmitted by the four polarizers.
(b) Can the transmitted light be decreased by removing one of the polarizers? If so, which one?
(c) Can the transmitted light intensity be extinguished by removing polarizers? If so, which one(s)?
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