State whether the focal length is taken as positive or negative under the Cartesian…

PHYSICS · Subjective · CBSE · Physics · Light — Reflection and Refraction · Light — Reflection and Refraction

Problem

State whether the focal length is taken as positive or negative under the Cartesian sign convention for the following: (i) a concave mirror (ii) a convex lens

Related theory

Lens Formulae
Mirror Equation
Mirror Formulae
Mirror formula
Light
Spherical mirrors
Optics
Sign convention for spherical mirrors

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