An object is placed in front of a concave spherical mirror whose focal length is

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

Problem

An object is placed

30\,\text{cm}

in front of a concave spherical mirror whose focal length is

10\,\text{cm}

. Which of the following gives the image distance

s_i

and the nature of the image? (a)

s_i=15\,\text{cm}

behind the mirror; the image is virtual and upright. (b)

s_i=7.5\,\text{cm}

in front of the mirror; the image is real and inverted. (c)

s_i=15\,\text{cm}

in front of the mirror; the image is real and inverted. (d)

s_i=7.5\,\text{cm}

behind the mirror; the image is virtual and upright.