Notes Example Solve Refraction LOW TO HIGH HIGH TO LOW a) What is the index of refraction of oil if the light travels at 1 98 x 10 m/s in Air Oil that medium? water air a) If light was traveling from this oil into air, which way would it bend? Diverging Lens Draw a ray diagram of a lightbulb place 4 cm in front of a diverging lens with a focal length of 6 cm Converging Lens Draw a ray diagram of a lightbulb place 4 cm in front of a converging lens with a Principal Ray focal length of 6 cm Central Ray FOCA Roy Lens Equation An object 2 cm high is placed at 10 cm from a If an object is 12 cm away from a conve convex lens, which has a focal length of 5 cm. Find the position, size and attitude of the image. lens of focal length 4 cm where will the ha = 2 cm do = 10 cm image be? f = 5.cm 1/(5 cm) = 1/(10 cm) + 1/di 0.2 cm ! = 0.1 cm | + 1/di 0,2 cm - 0.1 cm-1= 1/di 0.1 cm = 1/dj d = 10cm d. hi /(2 cm) = - (10 cm)/(10 cm) hi = . (2 cm) . (10 cm)/(10 cm) him - 2 cm (inverted)