![Understanding Plano-Convex Lens Orientation and Focal Lengths - Getting Started with CO2 Lasers - Maker Forums Understanding Plano-Convex Lens Orientation and Focal Lengths - Getting Started with CO2 Lasers - Maker Forums](https://forum.makerforums.info/uploads/default/original/1X/55ee737787f39f3c4337e66766f875379d9c589b.gif)
Understanding Plano-Convex Lens Orientation and Focal Lengths - Getting Started with CO2 Lasers - Maker Forums
The focal length of a plano convex glass lens is 20 cm(μ_g=1.5) . The plane face of it is silvered. An illuminating object is placed at a dis†an ce of 60 cm
![A plano-convex lens is made of a material of refractive index \\[n\\]. When a small object is placed $30cm$ away in front of the curved surface of the lens, an image of A plano-convex lens is made of a material of refractive index \\[n\\]. When a small object is placed $30cm$ away in front of the curved surface of the lens, an image of](https://www.vedantu.com/question-sets/604212cb-a3f7-42e7-8ac4-cf39335072a23210470616831870279.png)