RAY OPTICS AND OPTICAL INSTRUMENTS

Optically Rarer Medium |Optically Denser Medium|Rule To Draw Ray Diagram|Practice Exercise|Summary

Ray Optics Questions

Ray optics fails when

A: Ray optics assumes that light travels in a straight line which is disapproved by diffraction effects, yet the ray optics assumption is so commonly used in understanding location and several other properties of images in optical instruments. R: Typical sizes of apertures involved in ordinary optical instruments are much larger than the wavelength of light.

Four rays of light above the optic axis (parallel to it) and their path after striking an optical system are shown in column-I . Match the corresponding optical instrument from column-II:

Discussion and Optical Instruments

Resolvingpower of an optical instrument is the ability of the instrument to………….or………..the images of………… .

A ray travels from optically rarer to optically denser medium : i gt r :: A ray travels from optically denser to optically rarer medium : ____