1. You go to a dance club to forget how hard your astronomy class was. What is the frequency of a wave of ultraviolet light coming from a blacklight in the club, if its wavelength is 150 nm? 2. What is the energy of the photon with the frequency you calculated in the previous problem?

1. The following graphical data was obtained for the wavefunction of a photon. The wavefunction is of the form Y(x) = Asin (Bx). a. Determine A. b. Determine B. c. Determine the wavelength,2, in meters (assume the x-axis of the graph is distance in meters). d. Determine the linear frequency, v, in s'¹. e. Determine the energy, E, of this photon in J.

2. Use Max Planck's quantum theory to explain the following behaviour of photoelectrons. a. Low-intensity light does not release any photoelectrons. What will happen if the light is made brighter? Explain your reasoning. b. Low-intensity light releases photoelectrons. What will happen if the light is made brighter? Explain your reasoning. c. Low-intensity light does not release any photoelectrons. What will happen if the frequency of the light is gradually increased? Explain your reasoning.

A photon of light has a frequency of 5.00 x 1014 Hz. If the frequency of the photon was doubled then which of these would happen to the energy of this photon?   a. it would become one-fourth as much   b. it would become half as much   c. it would double   d. it would quadruple   e. it would triple