Part C Thinking (Full Solution is requiredl [10 marks] 16. A right triangular prism has edge lengths of 3.0 cm, 4.0 cm, and 5.0 cm. A ray of red light in air hits the 3.0 cm edge at an incident angle of (10. The prism is made of flint glass which has an index of refraction of 1.65 for red light (index of refraction for air = 1.0003}. Calculate the angle of deviation of the light beam from its original path after it leaves the prism. [Include a diagram}. 3.0 cm 5.0 cm 4.0 cm Part D Application (Full Solutions are Required] [20 marks] 17. Two sources are 7.2 cm apart and vibrate in phase at 7.0 Hz. A point on the third nodal line is 30.0 cm from one source and 37 cm from the other. a) Calculate the wavelength of the waves? [2 marks] b) Calculate the speed of the waves. [2 marks] 18. Two towers of a radio station are 400 m apart along an east-west line. The towers act as point sources radiating at a frequency of 1.0 x 106 Hz. Radio waves travel at a speed of 3.0 x 109 m/s. Determine the first angle at which the radio signal strength is at a maximum for listerners who are on a line 20.0 km north of the station (c = 3 x 103 m/s). [4 marks] 19. A device called a Fabry-Perot interferometer contains two parallel mirrors as shown below. The multiple reflections occur between the inner mirror surfaces, and the waves transmitted at the top can interfere. Assume tthat the light waves travel nearly perpendicular to the mirrors, the transfmitted waves interfere constructively, and the spacing between the mirrors is exactly 3.5,um. Provide a mathematical solution, to determine possible value(s) for the wavelength in the visible range between 600 nm and 700 nm. [7 marks] THESE waves interfere. r'H I'l"|ll'T0fS 20. A thin film of soapy water with an index of refraction of 1.35 has a thickness of 2.50 x 104m at one point. The film is surrounded by air. Determine the two longest wavelengths of light that will interfere constructively when reflecting from the soapy film. [5 marks]