Question

A ray of sunlight is passing from diamond into crown glass; the angle of incidence is 26.00

Answer 1

For blue,

Note that from Snell's law,      
      
n1sin(t1) = n2sin(t2)      
      
where      
      
n1 = index of refraction of first medium =    2.444  
t1 = angle of incidence =    26   degrees
n2 = index of refraction of second medium =    1.531  
t2 = angle of refraction
      
Thus,      
      
t2 =    44.41018915   degrees
***********************

For red,

Note that from Snell's law,      
      
n1sin(t1) = n2sin(t2)      
      
where      
      
n1 = index of refraction of first medium =    2.41  
t1 = angle of incidence =    26   degrees
n2 = index of refraction of second medium =    1.52  
t2 = angle of refraction
      
Thus,      
      
t2 =    44.03112115   degrees
*************************

Thus, the angle between them is

= 44.4102 - 44.0311 degrees

= 0.3791 degrees   [ANSWER]