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Homework answers / question archive /   If lens produce a magnification of 4, the image is 4 times as large as the object and is inverted

  If lens produce a magnification of 4, the image is 4 times as large as the object and is inverted

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  1. If lens produce a magnification of 4, the image is 4 times as large as the object and is inverted. T/F
  2. A virtual image will not show up on a screen and it cannot be photographed. T/F
  3. Total internal reflection can occur only when light passes form a material of high refractive index to one of low refractive index, never the other way around. T/F
  4. Light passes through 2 small parallel slits and leaves an interference pattern on a distant screen. If 2 slits are now moved closer to each other, the bright fringes on the screen will also move closer to each other. T/F
  5. A double slit experiment is modified by placing a "half way plate" over the upper slit as shown in fig. 1. A half-wave plate has negligible thickness (much smaller than lambda) but has the intensity property that the output light wave amplitude is the input wave amplitude times -1(it has the effect of flipping the wave upside down) Green light passes through the double slit shown an falls on a distant screen, After inserting the half-wave plate, the previous central interference peak will become dark. T/F
  6. Red and blue light pass through a double-slit and fall on a distant screen. The bright spots of red light will be farther from the center than the blue bright spots. T/F
  7. Suppose you wanted to start a fire using sunlight and a mirror. Which of statements is accurate? Use concave, or convex mirror...
  8. AS you walk away from a plane mirror on a wall, your image is...
  9. A small piece of aluminum catomic #13 contains 10^15 atoms. If the piece of Al has a net charge of 3.0 mc what fraction of the electrons that the aluminum had when it was neutral would have had to be lost.
  10. It is impossible for any isolated object to have a charge of 3e. T/F

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