A girl is sitting on the edge of a pier with her legs dangling over the water. Her soles are 80.0 cm above the surface of the water. A boy in the water looks up at her feet and wants to touch them with a reed. (nwater = 1.333.) He will see her soles as being
a. right at the water surface. b. 53.3 cm above the water surface. c. exactly 80.0 cm above the water surface. d. 107 cm above the water surface. e. an infinite distance above the water surface.
Question 2
The image of an object beneath the surface of a medium of refractive index n > 1 is seen in air by a person looking down on the surface. This image, formed by light rays leaving the flat refractive surface, is
a. real and closer to the viewer than the object.
b. virtual and closer to the viewer than the object.
c. real and farther from the viewer than the object.
d. virtual and farther from the viewer than the object.
e. virtual and the same distance from the viewer as the object.
Water-conducting cells of the xylem.
Water vapor is supplied to the atmosphere by local evaporation or horizontal transport (advection).
Water-vapor Images
A typical purified water system
Two water pipes together can fill a certain tank in 6 h
Girl Gathering Saffron Crocus Flowers