- location of images using ray diagrams
- determining magnification
A boy uses the blue color of light to find the refractive index of glass. He then repeats the experiment using the red color of light. Will the refractive index be the same or different in the two cases? Give a reason to support your answer.
The speed of light in air is 3 × 108 m s-1. Calculate the speed of light in glass. The refractive index of glass is 1.5
A lens forms an erect, magnified and virtual image of an object. name the device which uses this principle.
Draw a neat labelled ray diagram to show the formation of image by a magnifying glass. State three characteristics of the image.
A lens forms an erect, magnified and virtual image of an object.Where is the object placed in relation to the lens?