Physics · Human Eye and Colorful World
द्वि-फोकसी लेंस (bi-focal lens) के ऊपरी भाग में किस प्रकार का लेंस होता है?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1बेलनाकार लेंस
- 2अवतल लेंस✓
- 3उत्तल लेंस
- 4प्रिज्म
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अवतल लेंस
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