Question

what is the sign convention of ray optics​

Answer 1

Explanation:

Direction of ray is always taken as positive

upper side of principal axis is +ve

lower side of principal axis is -ve

Answer 2

Answer:

1. all distance should be measured from pole

2. the distance measured in the direction of incident light to be taken positive and measured in the opposite direction of incident light to be taken negative

3. height of object and height of image are positive if measure of upward from the axis and negative if measured downwards