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phy 200
Your 'question form' report has been received. Scroll down through the document to see any comments I might have inserted, and my final comment at the end.
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Can you tell me what problem set to look for this in... I looked but couldnt seem to come up with anything.
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Problem Number 8
A candle flame is 1.52 cm high and 10 cm from a circular mirror of radius 5 cm.
Where will the image of the flame form and how large will it be?
Will it be real or virtual? Will it be upright or inverted?
Sketch a ray diagram explaining how the image is formed.
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Problem 22 in the Introductory Problem Set includes a diagram for a converging mirror. It shows how the first principle ray is refracted through the focal point, while the central ray passes undeflected and meets the first principle ray at the image.
For a mirror the picture is similar, but the mirror reflects both rays. You do need to know that the focal length of a circular mirror is half its radius.
The focal point of a converging mirror is on the same side of the mirror as the object, and the first principle ray is reflected through it. The central ray is reflected just as it would be from a flat mirror, at the same angle below the axial ray as the the incoming central ray is above the axial. The two rays will meet at the image.
The same equation 1 / i + 1 / o = 1 / f still applies. In the given solution i is notated as dIImg and o as dObj.
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