Posted by Jon on Tuesday, April 8, 2008 at 1:06pm.
1. I didnt say anything about concave mirrors. THe question was on lenses. There are two types: concave (diverging), and convex (converging). If concave lenses produce only virtual images, what does that imply about convex?
Here is my previous brief response to the same question:
<<concave lenses form virtual images. They are often called diverging lenses, because they spread light apart. >>
What I recommend is that you take a few cases of convex and concave lenses, put an object somewhere, and examine the image. Is it real, or virtual? These ought to come to you readily.
After you get that, do the same for mirrors.
That ray diagram would answer question two. By nature of the image, they are looking for whether it is real or virtual, inverted or erect, and enlarged or not. A ray diagram answers that readily, in which you can discern your answer is not right on one count. You ought to state if it is enlarged or not.
If you want to check your diagram (dont cheat), http://www.glenbrook.k12.il.us/GBSSCI/PHYS/mmedia/optics/rdcmd.html
1) "what does that imply about convex?"
it implies that they produce real images
2)they are only looking for 2 things.
A)real and inverted
B)real and upright
C)virtual and inverted
D)virtual and upright
my 1st answer was A but someone said no
I was right on 2 answers that I had that I was told were wrong.
1)Specular reflection obeys the laws of reflection while diffuse reflection does not. True or false
I said false and I asked dwrls I believe, to explain why he said that was true
and 2)A rod of length 5.0 cm lies along the axis of a concave mirror of radius of curvature 20 cm. The end of the rod closer to the mirror is 15 cm from the mirror. Find the length of the image of the rod.
all I had to do was find the focal length which was 10 cm
Related Questions
Physics - A 5.0 cm real object is placed at a distance of 5.0 cm from a concave ...
physics - A 5.0-cm real object is placed at a distance of 30.0 cm from a concave...
physics - TRUE OR FALSE The virtual image formed by a convex mirror is always ...
Physics - An object is placed 30mm in front of a lens. An image of the object is...
Physics: Lenses - 1) A convex lens with a focal lenght of 4.0cm is placed 20.0cm...
Physics(Thank you) - 1)Which of the following objects can set fire to a piece of...
physics - A CONVEX LENS PRODUCES O REAL AND INVERTED IMAGE 2.5 TIMES MAGNIFIED ...
Physics - An image of a candle is produced by a convex lens 14 cm away. If the ...
Physics - An office copier uses a lens to place an image of a document onto a ...
Physics - 1)A beam of light passes from air to ethanol, with index of refracton ...
For Further Reading
