# Anyone know a internet source that can teach me about mirrors (specific kinds of questions)

Discussion in 'MCAT Study Question Q&A' started by csx, Sep 27, 2014.

1. ### csx 2+ Year Member

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May 8, 2013
I got TPR phys and it teaches me how to use the lens equ to find the answer. However theres nothing on how to answer questions like "an image placed outside the focal point of a concave mirror will be? real/inverted, virtual/upright, etc" (a more qualitative approach).

3. ### csx 2+ Year Member

1,078
211
May 8, 2013
nvm..i think i found something but if you know somethign dope still let me know!

4. ### justadream 5+ Year Member

2,174
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Apr 29, 2011
Just use the equation.

I find memorizing all that random stuff is useless and too confusing.

For each situation you are given, make up some numbers for that situation and plug them into the equation.

5. ### Hadi7183 2+ Year Member

63
22
Dec 8, 2013
NWT
Check the freelance teacher on YouTube. I myself learned about mirrors/lenses just by watching his videos. His videos are awesome in general, and he has lessons on almost all MCAT subjects. I think he is from UC Berkeley.

6. ### popopopop 5+ Year Member

1,246
714
Dec 18, 2011
DFW/Houston
You can answer your question using the lens equation, although I think you meant to put object instead of image.

Using the lens equation, make up a number for f, a bigger number for do and you'll fine that you'll get a positive number for di. If di is positive, that means the image is real and always inverted.

This summary helped me, and I also used online simulator to help visualize things.
http://faculty.spokanefalls.edu/InetShare/AutoWebs/AsaB/Phys103/MirrorsThinLens.pdf