Table 25.2 Index of Refraction n in Selected Media at Various Wavelengths Orange (610 Red (660 nm) 1.331 Yellow (580 Green (550 Blue (470 Violet (410 Medium nm) | 1.332 2.415 nm) nm) |1.335 nm) |1.338 nm) 1.342 Water 1.333 2.417 Diamond Glass, 2.426 2.458 2.410 1.512 2.444 |1.514 |1.518 1.519 1.524 1.530 crown Glass, flint Polystyrene 1.488 Quartz, 1.662 |1.665 1.667 1.674 1.698 1.684 |1.492 1.499 1.506 |1.490 1.493 fused 1.455 1.456 1.458 1.459 1.462 1.468

A plane sound wave in air at 20°C, with wavelength 589 mm, is incident on a smooth surface of water at 25°C at an angle of incidence of 12.3°. (a) Determine the angle of refraction for the sound wave. (b). Determine, the wavelength of the sound in water. Enter a number with units. A narrow beam of sodium yellow light, with wavelength 589 nm in vacuum, is incident from air onto a smooth water surface at an angle of incidence of 12.3o. (c) Determine the angle of refraction. (d) Determine the wavelength of the light in water.

Calculate the speed of light in air, water, and diamond if the refractive indices are 1.0003, 1.333, and 2.419 respectively.

(A) Show a model as to how white light interacts with a t-shirt that appears to an observer as red and white striped in terms of light wave absoprtion and reflection.  (B) Make a model of what will happen when white light is shined through a blue and green filter stacked on top of one another. It will appear black because white light is absorbed but show this in a skectch.