Question:
The primary purpose of using polaroids in sunglasses is to
The primary purpose of using polaroids in sunglasses is to
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Polarized sunglasses are especially useful for drivers and boaters because they specifically target reflected glare from roads and water surfaces.
Updated On: Jun 26, 2026
- make the sunglasses look fashionable
- change the colour of the objects
- control the intensity of light from the objects
- magnify the object
- make the sunglasses cheaper
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The Correct Option is C
Solution and Explanation
Step 1: Understanding the Concept:
Polaroids are materials that polarize light. Natural light is unpolarized, meaning its electric field vibrates in all planes perpendicular to the direction of travel.
Step 2: Detailed Explanation:
1. Glare Reduction: Light reflected from horizontal surfaces like water or roads is partially polarized in the horizontal plane. This creates "glare," which is intense and blinding.
2. Filtering: Polaroids in sunglasses are oriented vertically to block this horizontally polarized light.
3. Intensity Control: By blocking one component of the light wave and reducing reflected glare, polaroids significantly reduce the total intensity of light reaching the eye, making vision clearer and more comfortable.
Step 3: Final Answer:
The primary purpose is to control (reduce) the intensity of light and eliminate glare.
Polaroids are materials that polarize light. Natural light is unpolarized, meaning its electric field vibrates in all planes perpendicular to the direction of travel.
Step 2: Detailed Explanation:
1. Glare Reduction: Light reflected from horizontal surfaces like water or roads is partially polarized in the horizontal plane. This creates "glare," which is intense and blinding.
2. Filtering: Polaroids in sunglasses are oriented vertically to block this horizontally polarized light.
3. Intensity Control: By blocking one component of the light wave and reducing reflected glare, polaroids significantly reduce the total intensity of light reaching the eye, making vision clearer and more comfortable.
Step 3: Final Answer:
The primary purpose is to control (reduce) the intensity of light and eliminate glare.
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