A) A visible light wave has a wavelength of 646 nm. What is the frequency in a vacuum? B) The light wave enters a medium with an index of refraction of 1.63. If its frequency remains the same, what is its new wavelength (in nm)? C) If the angle of incidence in part (b) was 46°, what is the refracted angle in the new medium? D) some of the light in part (b) will be reflected at the surface of the new medium. What is the angle of reflection? D) What is the critical angle for the light from part (b) to be totally internally reflected if it reaches a boundary layer of glass (n = 1.5)?

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