A laser beam is incident at an angle of 30.0 to the vertical onto a solution of

Question:

A laser beam is incident at an angle of 30.0° to the vertical onto a solution of corn syrup in water. If the beam is refracted to 19.24° to the vertical,
(a) What is the index of refraction of the syrup solution? Suppose the light is red, with wavelength 632.8 nm in a vacuum. Find its
(b) Wavelength,
(c) Frequency, and
(d) Speed in the solution.