Identify the correct sign of the object distance when an object is placed in front of…

PHYSICS · Single correct · CBSE · Physics · Light — Reflection and Refraction · Light — Reflection and Refraction

Problem

Identify the correct sign of the object distance

u

when an object is placed

25\,\text{cm}

in front of a concave mirror on its principal axis. (a)

u=25\,\text{cm}

(b)

u=+25\,\text{cm}

(c)

u=-25\,\text{cm}

(d)

u=0.25\,\text{m}