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Refraction
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1994-08-31
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@The diagram shows a ray of light entering a glass block. What is the path taken by the ray as it leaves the block?
#ref1
Path V
Path W
Path X
@A person sits on the edge of a swimming pool,looking into the water at the bottom of the pool. The depth of the pool looks, to the person:
Shallower than it really is
Deeper than it really is
Exactly the same depth, wherever they look
@The diagram shows a ray of light entering a lens from the left. Which path will it follow as it emerges on the right?
#ref4
Path v
Path u
Path t
@The diagram shows a ray of light entering a lens from the left. Which path will the ray follow as it leaves the lens?
#ref2
Path u
Path t
Path v
@A ray of light has entered a lens from the left.Which path will it take as it leaves the lens?
#ref3
Path u
Path w
Path v
@Which lens shape would be best as a magnifying glass lens?
#lens2
Shape y
Shape x
Shape z
@Which lens is a converging lens?
#lens2
Lens y
Lens x
Lens z
@Which lens is a diverging lens?
#lens2
Lens z
Lens x
Lens y
@An object, viewed through one of these lenses, would look smaller. Which lens?
#lens2
Lens z
Lens y
Lens x
@A person who is longsighted:
can see distant objects clearly
can see near object clearly
can't see any kind of objects clearly
@A shortsighted person can see:
near objects clearly
near and distant objects clearly
only distant objects clearly
@Which lens would be found in glasses worn by someone who is shortsighted?
#lens2
Lens z
Lens y
Lens x
@Which lens would need to be put into glasses of someone who is longsighted?
#lens2
Lens y
Lens z
Lens x
@A ray of light passes through a block of glass. Which ray is drawn incorrectly?
#ref5
Ray Z
Ray X
Ray Y
@A student draws a ray of light as it passes through a block of glass. They drew Ray Z incorrectly because:
#ref5
It should be bent away from the normal when it leaves the block
The ray is totally internally reflected, and so does not leave the block at the drawn point
The ray must be drawn perfectly straight as it leaves the block as light always travels in straight lines