What is the difference between a continuous spectrum and a discrete spectrum? O A discrete spectrum is represented by distinct spectral components. A continuous spectrum represents a sound that continues indefinitely. O A discrete spectrum represents a sound that is turned on and off. A discrete spectrum is represented by an area under a curve.

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

In longitudinal mechanical waves, rarefactions are the regions of . a. high particle density, low air pressure o b. high particle density, high air pressure O C. low particle density, high air pressure o d. low particle density, low air pressure Approx Light source 60° Optical Fiber The part the optical fiber represented by x is called cladding. Select one: O True False

A sheet of glass (n=1.50) is coated with a 500 nm-thick layer of oil (n=1.42). A. For what visible wavelengths of light do the reflected waves interfere constructively? The range of wavelength of visible light is from 380 nm to 750 nm. B. For what visible wavelengths of light do the reflected waves interfere destructively? C. What is the color of reflected light? D. What is the color of transmitted light?

A thin film of oil (n=1.4) rests on the surface of a pool of water (n=1.33). Light with frequency 5.0x10^14 Hz traveling through air (n=1) is normally incident upon the oil, undergoing thin film interference. a) Will there be a relative phase shift? b) What is the wavelength of the light in the oil? c) What minimum thickness should the oil have if we wish to get constructive interference? d) What minimum thickness should the oil have if we wish to get destructive interference? Please write your answers in the space below and email your work. For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac). B I U S Paragraph Arial V 10pt くく AV I XQ 5 ते EE ...