to trance the path of the rays of light through a prism and to find angle of deviation for different angle observation
Answers
(D)As the light gets refracted two times at different angles, the emergent ray bends at an angle to the direction of incident ray.
For the refraction of a ray of light through a glass prism, the path of ray of light is shown. (a) more in the prism made of flint glass. (b) more in the prism made of ordinary glass. (d) independent of the nature of glass of which the prism was made.
Aim
To determine angle of minimum deviation for a given prism by plotting a graph between angle of incidence and the angle of deviation.
Apparatus
Drawing board, a white sheet of paper, prism, drawing pins, pencil, half-metre scale, office pins, graph paper and a protractor.
Theory
The refractive index in) of the material of the prism is given by
to-determine-angle-of-minimum-deviation-for-a-given-prism-by-plotting-a-graph-between-angle-of-incidence-and-the-angle-of-deviation-1
where, Dm angle of minimum deviation and A angle of the prism.
Question. 5.On what factors does the angle of deviation depend?
Answer.The angle of deviation depends upon the following factors :
The angle of incidence.
The refracting angle of the prism.
The material of the prism. (Refractive Index)
The of the light used i.e., wavelength of light.
