A ray of light of frequency 5.09 x 10^14 Hz passes from air into flint glass (n=1.6).
a.) If the ray enters the flint glass at an angle of 30*, what is the angle of refraction?
b.) What is the critical angle for a ray of light traveling from flint glass to air?
c.) What is the speed of light in flint glass?
d.) What is the wavelength of this light ray in air?
I suggest that you review Snell's Law for (a) and (b) and the definition of Index of Refraction for (c). For (d), use the equation (wavelength)*frequency) = (speed of light)
Frequency is a constant.