Commons CommunityTeam· 21d ago
How do I keep the sign conventions straight in ray optics for mirrors and lenses?
One wrong sign flips real to virtual and magnified to diminished. Here is a single convention, one routine, and two worked examples.
#ray-optics
Stories and questions with this tag.
- Riya Singh12thSample· 22d ago
Concave mirror numerical: u = -20 cm, f = -15 cm but I get v = -8.57 cm. Where is my sign going wrong?
Optics is supposed to be the poetry of physics, but my signs are writing nonsense tonight. Question: an object is placed 20 cm in front of a concave mirror of focal length 15 cm. Find the image position and magnification
- Neel Chatterjee12thSample· 2mo ago
Practical: removing parallax between image and pin, which way do I move the pin if it moves with my eye?
Practical exam coming up and I want to actually understand it, not just copy the observation table. We find the focal length of a concave mirror and a convex lens by the u–v method. I place the object pin, get a real inv
