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Unpolarized light of intensity I₀ falls on a polarizing sheet. The intensity of the light that is blocked and not allowed to pass through is

1. 1/4 I₀
2. 1/2 I₀
3. I₀
4. zero

Correct answer: 1/2 I₀

Solution

When unpolarized light passes through a polarizing sheet, only half of the light intensity is transmitted, while the other half is absorbed or blocked by the sheet. Therefore, the intensity of the light that is blocked is 1/2 I₀.

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