Physics · Optics and Human Eye
द्वि-फोकसी (बाइफोकल) लेंस का कौन-सा भाग पास की दृष्टि को सुगम बनाता है?
- 1अवतल लेंस वाला ऊपरी भाग
- 2उत्तल लेंस वाला निचला भाग✓
- 3उत्तल लेंस वाला ऊपरी भाग
- 4अवतल लेंस वाला निचला भाग
सही उत्तर देखें
उत्तल लेंस वाला निचला भाग
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