Two identical converging lenses of focal length 100 mm are placed 400 mm apart, and an object 40 mm tall is placed 230 mm to the left of the left lens.

a. Draw a scale diagram showing the three principal rays for te left lens, and use them to locate the image formed by this lens.

b. draw the principle rays for the right lens, and use them the locate the image formed by this lens. is te image formed by the right lens

c. real or virtual?

d. larger or smaller than the object?

luster is not a good characteristic to use by itself because luster is the property of minerals that indicates how much the surface of a mineral reflects light. the luster of a mineral is affected by the brilliance of the light used to observe the mineral surface.

myth. it was once thought that animals, including cats and dogs, could only see in black and white. however, scientists have proven this to be a myth. in all animals, including humans, the perception of colour is determined by the presence of cells in the eye called cone photoreceptors.