Sir lens thick hoga to focal length chhota hojayega to curvature bara kaise hoga. Jabki focal length curvature ke directly proportional hai to curvature ko chhota hona chahiye. Please explain, sir 🙏🏼
Sir ur videosssss are soooooo soooooo soooooooo9 goooddddd Plsssss plssssss plssss start mwking videos for pathology and microbiology 2nd year topics Pls sir