Please explain about sign conversation in mirror equation
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The mirror equation gives us the relationship between the focal length (f), distance of object form the mirror (u) and the distance of image form the mirror (v). The mirror formula for a concave mirror is given below.
1/f = 1/u +1/v
Sign Conventions-
Distances are to be measured from the pole (vertex) of the mirror marked by point V in the figure
Distances measured along the direction of the incident ray are positive. Distance measured opposite the direction of the incident ray are negative.
Distances measured above the principal axis are positive. Distances measured below the principal axis are negative.
1/f = 1/u +1/v
Sign Conventions-
Distances are to be measured from the pole (vertex) of the mirror marked by point V in the figure
Distances measured along the direction of the incident ray are positive. Distance measured opposite the direction of the incident ray are negative.
Distances measured above the principal axis are positive. Distances measured below the principal axis are negative.
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