Why is the height of the object always considered above the principle axis?
Asked by | 23rd Dec, 2012, 02:34: PM
Here the object height will be taken as=-h1
image height =+h2
Object distance=-u, image distance=+v
positive or negative sign one has to take according to the question.
Answered by | 24th Dec, 2012, 03:29: PM
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