Question

While finding angle of minimum deviation the shape of graph obtained is ___​

Answer 1

While finding the angle of minimum deviation the shape of the graph obtained is curved.

• A graph should be drawn between the angle of incidence (i) and angle of deviation (d) by taking the angle of deviation (d) along Y-axis and the angle of incidence (i) along X-axis.  
• The graph should be a curved graph.
• The angle of minimum deviation is obtained from the graph.  
• The refractive index (n) of the material of the prism is calculated using the formula, n = [sin (A+D)/2] / [sin (A/2)]
• where D is the angle of minimum deviation and A is the angle of the prism