====== Light Practice Problems ======

Problems from Monroe Community College

  - A laser emits light of frequency 4.74 x 10^14 sec-1 What is the wavelength of the light in nm?
  - A certain electromagnetic wave has a wavelength of 625 nm. What is the frequency of the wave? 
  - How many minutes would it take a radio wave to travel from the planet Venus to Earth? (Average distance from Venus to Earth = 28 million miles)
  - What does it mean for two waves to have a phase difference? Explain with words, a picture, and mathematical expressions.