Complete the following tasks and answer the questions: 1. Figure 14.9 shows the path of a ray through a plane-parallel transparent plate, the refractive index of which varies with distance z from the bottom surface of the plate. Prove that nA sin a=nв sin b. 2. Imagine that you are standing in the middle of a wide, flat desert. In the distance you see what looks like a water surface. As you approach the “water”, it gradually moves away from you, so that the distance to it always remains equal to 250 m. Explain this phenomenon. 3. Calculate the temperature T at the Earth’s surface for the previous point of the problem, assuming that your eyes are at a height of 1.6 m from the surface. It is known that the refractive index of air n0 at temperature t0=15 °C and normal atmospheric pressure is 1.000276. The air temperature at a height greater than 1 m is considered constant and equal to t1 = 30 °C. The pressure is normal (0.1013 MPa). Assume that (n - l) is proportional to the density of particles in the gas.
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