1.

A beam of natural light falls on a system of 5 polaroids which are arranged in succession such that the pass axis of each polaroid is turned through 60∘ with respect to the preceding one. The fraction of the incident light intensity that emerges through the system is,

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A beam of natural light falls on a system of 5 polaroids which are arranged in succession such that the pass axis of each polaroid is turned through 60∘ with respect to the preceding one. The fraction of the incident light intensity that emerges through the system is,



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