Choose the best answer from the options that follow each question. If two monochromatic light waves undergo interference, the amplitude of the resultant wave is a. less than the amplitude of either of the component waves. O b. equal to the sum of the amplitudes of the component waves. c. equal to zero. d. greater than the amplitude of either of the component waves.

Physics 20: SUMMER Assignment 13 7. Use the following information and diagram to answer parts a and b. A reflecting surface is inclined 30° above the horizontal. A wave is traveling horizontally and reflects off the surface, as shown below. The solid grey line is the barrier and the black arrow is the wave. (1) (1) a) What is the angle of incidence? 30° 1 b) What is the angle between the incident ray and the reflected ray? 4

Which statement below is false? O The wavelength of light is the distance between two corresponding points in the wave pattern O The frequency of the light is the number of waves that pass a given point in a second The higher the frequency of light, the longer the wavelength The frequency of light increases as wavelength decreases The higher the frequency of light, the greater its energy

Which of the following phenomena explains the dispersion of white light? A) Reflection B) Diffraction C) Refraction D) Interference