4. A diverging lens has focal length f = −10 cm. An object is placed 12 cm from the lens. a) Draw a ray diagram of the s

[answerhappygod]

4. A diverging lens has focal length f = −10 cm. An object is
placed 12 cm from the lens.
a) Draw a ray diagram of the system and use 2 rays to locate the
position of the image.
b) Use the lens equation to calculate the position of the
image.
c) Describe the image properties.
5. A plastic light pipe has an index of refraction of 1.53. For
total internal reflection, what is the minimum angle of incidence
if the pipe is in
a) air?
b) water? (Refractive index of air = 1.00 and of water =
1.33)