Physics · Optics
5 डायोप्टर और 4 डायोप्टर क्षमता वाले दो पतले अभिसारी लेंस एक दूसरे से 10 सेमी की दूरी पर समाक्षीय रूप से रखे गए हैं। उनके संयोजन की फोकस दूरी कितनी होगी?
- 120.00 सेमी
- 21.11 सेमी
- 39.09 सेमी
- 411.11 सेमी✓
सही उत्तर देखें
11.11 सेमी
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