1.
When a light beam emerges from water into air, the average light speed
A
decreases
B
increases
C
none of the above
D
remains the same
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8 practice sets · Page 1 of 1
When a light beam emerges from water into air, the average light speed
decreases
increases
none of the above
remains the same
The explanation for a filled root beer mug looking fuller than it is involves
reflection
both
neither
refraction
Stars twinkle when seen from Earth at night. When seen from the moon, stars
twinkle more
dont twinkle
non of the above
twinkle less
A rainbow nicely illustrates an example of light
refraction
both A and B
neither A nor B
internal reflection
A person standing waist-deep in a swimming pool appears to have short legs because of light
interference
diffraction
reflection
refraction
A penny lies in the bottom of a tea cup filled with water. As you look down on the penny, compared to its actual depth, it looks
farther away
at the same depth
none of the above
closer
A mirage can occur
when there is a layer of hot air close to the ground
on a hot day
all of the above
when cooler air is above hotter air
A beam of light emerges from water into air at an angle. The beam is bent
not at all
48 degrees upward
96 degrees upward
away from the normal