- #1
fs93
- 12
- 0
Homework Statement
The index of refraction for blue light in plastic is 1.46 and for red light is 1.39. Determine the angular spread of the spectrum leaving the plastic block [presumably to air] for a beam of white light incident at angle of 45° to the plastic block.
Homework Equations
n1/n2=sinI/sinR
The Attempt at a Solution
They are asking for white light, but I am only given blue and red?
Using Snell's law to find:
Blue - 1.46/1=sin45/sinX
sinX=0.48
X= 28.97
Red - 1.39/1=sin45/sinY
sinY=0.52
Y=31.33
Is that right? Would blue would leave at 28.97° and red at 31.33°. What about white light?
Thanks.