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 cmThe power to be a 4th-dimensional entity. Variation of Dimensional Entity. Not to be confused with Temporal Entity. 4D Physiology Fourth Dimensional Physiology New God Physiology (Fourth