Question

define:1) Refraction
2)Incedent ray
3)Spectrum
4)Dispersion
5)Refrative index

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Answer 1

Answer:

♤refraction is the change in direction of a wave passing from one medium to another or from a gradual change in the medium. 

♤An incident ray is a ray of light that strikes a surface. The angle between this ray and the perpendicular or normal to the surface is the angle of incidence. The reflected ray corresponding to a given incident ray, is the ray that represents the light reflected by the surface.

●dear rest 3 see in the pic u will get the answer.

Answer 2

Answer:

your answer is in the geographical reference books