Recent content by Suavez

I have another problem I'm having some issues with titled "Undefined Angle of Incidence." Any suggestions for that one? I have to submit this take-home exam in 30 minutes and these are the last two problems giving me trouble. I understand things a lot more clearly when I see the broken-down...

That was the first thing I did for the problem.

Damn, I'm lost. What is the relevence of p+q? My next choice would have been to position the lens 1.35 m away from the from the spider (3/4 of the total distance).

Ok, so that makes it 45 degrees?

If it is incident it's perpendicular and if it's perpendicular it's 90 degrees.

The lens needs to be 0.9 m from the wall? My logic here is 0.5 of the total distance and the magnification is -0.5. If I am correct for this position to produce a half-size image of the spider, what will the focal point have to be for the lens? 0.9 m as well?

Sorry buddy, that was no help. After spending about an hour on that problem, I think I deserve a little more than that. I don't expect anyone to DO the work for me but come on now, let's be serious. My question is: What is the maximum angle of incidence for which the light ray can emerge into...

Homework Statement A 1.0-cm-thick layer of water stands on a horizontal slab of glass. Light from a source within the glass is incident on the glass-water boundary. What is the maximum angle of incidence for which the light ray can emerge into the air above the water? Homework Equations...

lol Thanks for welcoming me. The things you stated were the immediate obvious things in my head but I suppose my question should have been, "What is that equation?" The problem says that the distance given is from the spider to the wall. Where to from there?

Homework Statement A 2.0-cm-diameter spider is 1.80 m from a wall. A. Determine the focal length of a lens that will make a half-size image of the spider on the wall. B. Determine the position (measured from the wall) of a lens that will make a half-size image of the spider on the...