A point object is placed at a distance of and its real image is formed at a distance…

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

Problem

A point object is placed at a distance of

10\,\text{cm}

and its real image is formed at a distance of

20\,\text{cm}

from a concave mirror. If the object is moved by

0.1\,\text{cm}

towards the mirror, the image will shift by about (1)

0.4\,\text{cm}

away from the mirror (2)

0.4\,\text{cm}

towards the mirror (3)

0.8\,\text{cm}

away from the mirror (4)

0.8\,\text{cm}

towards the mirror