Physics · Optics
निम्नलिखित में से कौन सा लेंस बीच में मोटा और किनारों पर पतला होता है?
- 1बेलनाकार लेंस
- 2समतलावतल (प्लैनो-कॉनकेव) लेंस
- 3उत्तल लेंस✓
- 4अवतल लेंस
सही उत्तर देखें
उत्तल लेंस
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