Answer to Question #24233 in Optics for ganesh
It is derived from general equations for refractive surfaces, the Abbe equation and the Lensmaker's equation. If an object is placed on the lens' axis, its image will be focused on some distance from the lens. The heights and the positions of the object and the image can be related by similar triangles with equal angles (in the approximation of paraxial optics).
Refer to http://www.tutorvista.com/content/physics/physics-ii/light-refraction/convex-lens-formula.php#
for the illustration of this.
Need a fast expert's response?Submit order
and get a quick answer at the best price
for any assignment or question with DETAILED EXPLANATIONS!