A magician can make a candle look as if it is burning under water by focusing light from a candle flame burning in air directly on top of an underwater candle. To do this you want to use a (Hint: eliminate those that cannot work.)
a. concave mirror farther than one focal length from the burning candle. b. a convex mirror farther than one focal length from the burning candle. c. a biconcave lens farther than one focal length from the burning candle. d. a concave mirror closer than one focal length to the burning candle. e. a convex lens closer than one focal length to the burning candle.
Question 2
When you stand in front of a convex mirror, the image you see is
a. real and inverted. b. real and upright.
c. virtual and inverted. d. virtual and upright.
e. real and inverted if your distance from the mirror is greater than two focal lengths.
A Need for Improved Water-Use Efficiency in Plants
Fragrant water lily
Claude Monet, Water Lilies, Morning: Willows (central section and right side).
Transduction of Light by Photoreceptors
Diversion of surface water