Question

A. Fill in the blanks.
1. A ray of light passing from one medium to another does not bend its path if its angle of incidence equals ________ degree.
2. The more is the optical density of a given medium the ________ is the speed of light through it.
3.The phenomenon of the splitting of white light into seven colour is known as the phenomenon of _________
4. The points on the principal axis of a concave lens from where a beam of incident parallel ray appears to diverge is called the ________ of the cocave lens.
5. An object should be placed at the _________ point so that a convex lens forms its real and inverted image of the same size.
​

Answer 1

Answer:

angle of reflection

dispersion of light

f1

f1