Ahh, that is another matter altogether. The AB is named differently to 'prevent confusion', so teachers can go like "Object AB forms image A1B1 which is magnified by the second lens to form image A2B2--"
Frankly what surprises me most is how my teachers who are considered to be the "best"...
Yes, I'm glad to know that it's not a real "Mistake" but without a health warning its as good as one. My college teachers are hopeless but my school physics teacher did introduce me to this amazing book called "Conceptual Physics" by Paul.G.Hewitt which i often read to strengthen my basics...
yes, i am glad someone asked, its very simple.
take a look at attachment-1.
1.Let us name the ray that is initially perpendicular to the principal axis as X
2.Let us name the ray that goes through the center of the lens as Y
Do you see how these two rays (X and Y) suddenly change their...
I noticed that the ray diagram for the "how the compound microscope works" and "how the telescope works" is wrong in my government sanctioned physics textbook(and countless other books and websites!)
The diagram printed was this-
Name: Physics Standard XI
Printed by: Maharastra State Board of...