A converging lens has a focal length of

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

Problem

+20\,\text{cm}

. An object is placed

60\,\text{cm}

in front of the lens. What is the image distance

s_i

? (a)

15\,\text{cm}

(b)

30\,\text{cm}

(c)

-30\,\text{cm}

(d)

20\,\text{cm}