Looking straight down onto water (90 degrees to the surface), a light ray coming
ID: 1327836 • Letter: L
Question
Looking straight down onto water (90 degrees to the surface), a light ray coming out of the water straight toward you is refracted
Away from the vertical
Toward the vertical
Not at all
At the critical angle
Red light of wavelength 750 nm in vacuum enters crown glass (n=1.55). The wavelength and color of light inside the glass is now
480 nm; red
1162 nm; infrared
480 nm; bluegreen
240 nm; ultraviolet
Snell's law describes
Dispersion
Magnification
Refraction
Reflection
A.Away from the vertical
B.Toward the vertical
C.Not at all
D.At the critical angle
Explanation / Answer
first
Toward the vertical
second
480 nm; bluegreen
third
Refraction
B.Toward the vertical
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