Question:
When unpolarised light is passed through crossed polaroids, then light passing through first polaroid
When unpolarised light is passed through crossed polaroids, then light passing through first polaroid
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When unpolarised light passes through crossed polaroids, no light passes through the second polaroid due to the perpendicular alignment of their transmission axes.
Updated On: Jan 26, 2026
- also passes through second polaroid.
- partially passes through second polaroid.
- is blocked by second polaroid.
- passes with greater intensity.
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The Correct Option is C
Solution and Explanation
Step 1: Understanding polaroids.
When unpolarised light passes through the first polaroid, it becomes polarised. However, if the second polaroid is crossed with the first one (i.e., the transmission axis of the second polaroid is at 90° to the first), no light will pass through the second polaroid. Step 2: Conclusion.
Thus, the correct answer is (C) the light is blocked by the second polaroid.
When unpolarised light passes through the first polaroid, it becomes polarised. However, if the second polaroid is crossed with the first one (i.e., the transmission axis of the second polaroid is at 90° to the first), no light will pass through the second polaroid. Step 2: Conclusion.
Thus, the correct answer is (C) the light is blocked by the second polaroid.
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