- #1
roam
- 1,271
- 12
Homework Statement
A concave spherical mirror has a radius of curvature of magnitude 27.1 cm. Determine the object position for which the resulting image is inverted and larger than the object by a factor of 4.00.
Homework Equations
Mirror equation in terms of focal length: 1/p + 1/q = 1/f
The Attempt at a Solution
I'm not getting the correct answer for this question. Here's what I've done so far:
First we find the focal length
[tex]f=\frac{R}{2} \implies \frac{27.1}{2}=13.55 \ cm[/tex]
[tex]M = \frac{-q}{p}=4 \implies q=-4p[/tex]
Substituting in
[tex]\frac{1}{p} - \frac{1}{4p} = \frac{1}{13.55}[/tex]
[tex]\frac{3}{4p} = \frac{1}{13.55} \implies p =10.162[/tex]
I don't know why the answer is wrong. I know that image is inverted when Magnification is negative. Here it is not -ve because the questions says "larger" so I took it as positive...
Last edited: