list sign conventions.Draw a diagram and apply these conventions in the determination of focal length of a spherical mirror which forms a three times magnified real image of an object placed 16cm in front of it
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The pole is taken as the origin.
All distances are measured from the pole.
Distances measured above the principal axis are positive (perpendicularly).
Distances measured below the principal axis are negative (perpendicularly).
Distances measured along the direction of the incident ray are positive.
Distances measured opposite to the direction of the incident ray are negative.
All distances are measured from the pole.
Distances measured above the principal axis are positive (perpendicularly).
Distances measured below the principal axis are negative (perpendicularly).
Distances measured along the direction of the incident ray are positive.
Distances measured opposite to the direction of the incident ray are negative.
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