Question

explain sign convention in mirrors

class 10th

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Answer 1

1)Object is always placed to the left of mirror
2)All distances are measured from the pole of the mirror.
3)Distances measured in the direction of the incident ray are positive and the distances measured in the direction opposite to that of the incident rays are negative.
4)Distances measured along y-axis above the principal axis are positive and that measured along y-axis below the principal axis are negative.

Answer 2

heya!!!!

The sign convention is based on the direction of light. For easy understanding it revolves around the XY coordinate system as long as direction of light is from left to right.All measurements are taken starting from the origin.
distance measured :-
1. Above x-axis is positive ; below x-axis is negative.
2. For y-axis, right of origin is positive ; left of origin is negative.


hope it may help you :-)

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