psg1 114 ⚡ Name:

  1. Define reflection.
  2. Define refraction.
  3. Define total internal reflection.
  4. _____ A laser is beamed into a semi-circular dish of water. Will the light come out at A or B?
    Laser into a semi-circular plastic dish bg rect dish hemi circle cover dish edge laser laser emitter laser A B
  5. ______________ Based on the data below, what is the index of refraction for water?
    refraction data and graph
  6. In Einstein's equation E = mc2, what do that letters stand for?
  7. Sir Stephen Hawking applied Einstein's equations of general relativity and the equations of quantum mechanics to a particular type of object found in outer space. What was the name of the type of object Stephen Hawking was working on?
  8. A student gathered the data seen in the table below.
    Graphical analysis

    Water Data

    image dist
    i (cm)    		object dist
    o (cm)
    00
    2028
    4056
    6084
    80112
    background rectangle major grid lines axes text layers Index of Refraction for water image depth i (cm) object depth o (cm) x-axis labels 0 10 20 30 40 50 60 70 80 90 100 y-axis labels 0 10 20 30 40 50 60 70 80 90 100 110 120
    1. ______________ Calculate the slope of the line. The slope is the experimental index of refraction for water.
    2. ______________ __________ Use the slope above to predict the object depth for a penny that appears to be 30 cm underwater.
    3. ______________ __________ Use the slope above to predict the image depth for a coral head that is 200 cm underwater.
    4. ______________ Water has a published index of refraction of 1.33. What is the error for the slope?
    5. ______________ Water has a published index of refraction of 1.33. What is the percentage error for the slope?

error = experimental value − expected or published value

percent error= (experimental value−expected value) (expected value)

slope= ( y2 − y1 ) ( x2 − x1 )