

InterviewSolution
Saved Bookmarks
1. |
The focal length of a concave mirror is 50cm. Where an object be placed so that its image is two times and invertedA. 55cmB. `-75cm`C. 65cmD. 85cm |
Answer» Correct Answer - B Magnification,`m=(f)/(f-u)` Hence, `m=-2 and f=-50cm` `-2=(-50)/(-50-u) Rightarrow100+2u=-50` or `u=(-150)/(2)=-75cm` |
|