White Light Is in One Case Dispersed by Refraction on Passing

Multiple Choice

White light is in one case dispersed by refraction on passing through a glass prism and in a second case diffracted by means of a grating.When the red component and the blue component are considered,it is found that

A) red is both refracted and diffracted at greater angles than blue.
B) blue is both refracted and diffracted at greater angles than red.
C) red is refracted at a greater angle than blue,but blue is diffracted at a greater angle than red.
D) blue is refracted at a greater angle than red,but red is diffracted at a greater angle than blue.
E) both red and blue are refracted at the same angle and diffracted at the same angle.