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A
man is preening 1.70 m in front of a plane mirror. Which of the following best describes the
image formed by the plane mirror? |
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The image forms behind the mirror
since the law of reflection holds. The
image is virtual since the light rays do not really come to a focus behind
the mirror but only appear to form there.
If you were behind the mirror, you would not see the image. So it is virtual. |
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So Correct Answer is D ! |
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Light
rays travel from an object very far away from a concave mirror, which has a
radius of curvature . After the rays strike the mirror, an image
is formed which can best be described as: |
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The image being very far away means
its object distance is infinity .
Thus the image will form at the focal length of the mirror which is
one half the radius of curvature or |
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It is a real image so it will be
inverted. |
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There was a typo obviously 23 is not
28. So All answers were
considered correct. The intent
was answer C would be correct in that the image would be in front of mirror,
real and inverted. Again, this
question is scored correct for all who took the
quiz. |
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A
tall object is located to the left of a concave spherical mirror
whose focal length is . Which of the following best
describes the image formed by the mirror? |
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This is a real image so it will be
to the left of the mirror and inverted |
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So Correct Answer is A ! |
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An
object tall sits on the left side of a convex
spherical mirror whose radius of curvature is . The image is formed to the right of
the mirror. How far away was the
object? |
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So the Correct Answer is B ! |
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An
object is tall and is located to the left of a concave spherical mirror
with a focal length of . The image is found to be to the left of the spherical mirror. How tall is the image and is it upright or
inverted? |
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Solving for the image height |
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- sign indicates inverted! |
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So Correct answer is A ! |
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