White light enters horizontally into 60 degrees apex prism where n(red) = 1. and n(blue) = 1.3. what are the angles at which red and blue emerge from the prism with respect to the normal.

for red light     e = -30 Degree

for Blue light e = 12.67 degree

Explanation:

given data:

using prism formula for red light

from figure

r+ r' = A

where A is 60 degree

r' = 60 - 90 = -30 degree

angle of emergence will be

e = -30 Degree

using prism formula for Blue light

from figure

r+ r' = A

where A is 60 degree

r' = 60 - 50.28 = 9.72 degree

angle of emergence will be

e =  12.67 Degree