An object is placed 20 cm in front of a convex mirror

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

Problem

An object is placed 20 cm in front of a convex mirror. (a) What sign should be assigned to the object distance

u

? (b) What sign should be assigned to the focal length

f

of the mirror? Give a one-sentence reason for each answer.