defence exam Coast Guard Navik GD (General Duty) 02/2025 Mock Test Series Physics Optics Mirrors and Images
A concave mirror of focal length f produces an image n times the size of the object. If the image is real then the distance of the object is:
1
(n – 1)/ f
2
(n + 1)/f
3
(n+1)f/n
4
None of these