A certain kind of glass has nblue = 1.650 for blue light and nred = 1.610 for red light. If a beam of white light (containing all colors) is incident at an angle of 30.0º, what is the angle between the red and blue light inside the glass

angle between the red and blue = 1.26°  

Explanation:

given data

Refractive index  For blue = 1.650

Refractive index   For red = 1.610

Incident angle = 30°

solution

we will Use here  Snell's law  that is express as

  =   n      .................1

so we get here refraction angle for both blue and red

so for blue ray it will be put value in equation 1

  =   1.650

  = 0.3030

 =  17.64°

and

for red ray it will be put value in equation 1

  = 1.610

=  0.3105

  = 18.09°

so

angle between the red and blue will be as

angle between the red and blue =    ................2

put here value

angle between the red and blue = 18.09° - 17.64°

angle between the red and blue = 1.26°