The power of a lens is +4D. What is the nature of lens

power 4dTranscript. Question 39 If the power of a lens is − 4.0 D, then it means that the lens is a (A) concave lens of focal length −50 m (B) convex lens of focal length +50 cmPOWER 4D POWER 4D - DAFTAR POWER 4D. Rp 30.000. Detail Produk . POWER 4D adalah jurnal ilmiah yang mempublikasikan riset terkini di