An object is placed in front of a concave lens and a virtual image is formed from the…

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

Problem

An object is placed

0.25\,\text{m}

in front of a concave lens and a virtual image is formed

0.10\,\text{m}

from the lens on the same side as the object. Determine the focal length

f

of the lens (answer in centimetres). (a)

+16.7\,\text{cm}

(b)

-7.1\,\text{cm}

(c)

-16.7\,\text{cm}

(d)

-10\,\text{cm}