I did my work and i felt like I\'m missing something. I want to compare my answe

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I did my work and i felt like I'm missing something. I want to compare my answer with yours. Please show me your steps so I can chat with you and understand. Please remember Chegg's 5 subsets per question policy, which means you should do all of the four problems
3. (5 pts.) Suppose that a shiny silver spherical Christmas-tree ornament makes a nicely reflective convex mirror The ormament has a diameter of 10.0 cm. You position your face (the "object) 6.0 cm away from the surface of the ornament. When you look at the ornament, you see your reflection (the "image"). What is the magnification of your reflection? Is it upright or inverted? Show your work completely 4. (5 pts.) You notice a thin layer of transparent oil floating on the surface of a water puddle. Suppose that strikes the puddle from nearly directly overhead, and also that you are viewing the puddle from nearly directl the puddle. You see bright colored light reflected from the oil, and the color gradually varies as the oil's thickness varies. In one particular region, the oil appears to be bright green a-550. nm). If- i 50 and nwa ral 33. how thick (in nanometers) is the oil layer in that region? Since there are an infinite number of solutions, give the three thinnest answers. Show your work clearly, and include a sketch if desired. sunlight y above

Explanation / Answer

F=r/2=10/2=5.00cm, do=6.00cm

Let us find image,

1/f=1/do+1/di

1/5.00=1/1.60+1/di

di=-2.35cm

Negative valuesf image distance indicates image is virtual behind the mirror.

Let us now find image height

m=hi/ho=-di/do

Plugging values,

m=hi/ho=-(-2.35)/6.00= 0.39 cm

This indicates image height is positive and thus image is upright.

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