1. The wavelength of orange light is 6.0x107 m, in air. Calculate its frequency. [1] 2....

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1. The wavelength of orange light is 6.0x107 m, in air. Calculate its frequency. [1] 2. Explain how we perceive colour in terms of abortion and reflection. [3] 3. Explain the purpose of Young' Double-Slit Experiment. What did he prove? Why was he successful while many other experiments failed? [3] 4. In a double-slit experiment, a fifth-order bright fringe of 480 nm light is observed at an angle of 15.0. Determine the separation of the slits. [2] 5. An interference pattern is formed on a screen when helium-neon laser light, with a wavelength of 6.3x107 m, is directed toward it through two slits. The slits are 43 m apart. If the screen is 2.5 m away, what is the separation between adjacent nodal lines? [2] 6. If Canada's total annual energy consumption was 8.167 x1018 J, how much mass would be needed to produce this energy if the mass could be totally converted into energy? [2] 7. In the year 2000, a 20-year old astronaut left Earth to explore the galaxy; her spaceship travels at 2.5x108 m/s. She returns in 2040. How old will she appear relative to people on Earth? [2] 8. A spaceship goes past a planet at a speed of 0.80c relative to the planet. An observer on the planet measures the length of the moving spaceship to be 40.0 m. [3] a. What is the actual length of the spaceship? b. If the planet has a diameter of 2.0x106 m, what diameter will someone on the spaceship observe? 1. The wavelength of orange light is 6.0x107 m, in air. Calculate its frequency. [1] 2. Explain how we perceive colour in terms of abortion and reflection. [3] 3. Explain the purpose of Young' Double-Slit Experiment. What did he prove? Why was he successful while many other experiments failed? [3] 4. In a double-slit experiment, a fifth-order bright fringe of 480 nm light is observed at an angle of 15.0. Determine the separation of the slits. [2] 5. An interference pattern is formed on a screen when helium-neon laser light, with a wavelength of 6.3x107 m, is directed toward it through two slits. The slits are 43 m apart. If the screen is 2.5 m away, what is the separation between adjacent nodal lines? [2] 6. If Canada's total annual energy consumption was 8.167 x1018 J, how much mass would be needed to produce this energy if the mass could be totally converted into energy? [2] 7. In the year 2000, a 20-year old astronaut left Earth to explore the galaxy; her spaceship travels at 2.5x108 m/s. She returns in 2040. How old will she appear relative to people on Earth? [2] 8. A spaceship goes past a planet at a speed of 0.80c relative to the planet. An observer on the planet measures the length of the moving spaceship to be 40.0 m. [3] a. What is the actual length of the spaceship? b. If the planet has a diameter of 2.0x106 m, what diameter will someone on the spaceship observe?