It was covered with nearly 5,000 square feet of ROE Carbon 5 MarkII panels in both concave and convex configurations. “The biggest requests from production companies this year revolve around ...

\(power \ of \ a \ lens \ (D) = \frac{1}{focal \ length \ (m)}\) A lens has a power of -3.33 dioptres. Calculate the focal length and state what type of lens it is.