InterviewSolution
Saved Bookmarks
| 1. |
A combination consisting of a concave lens in contactof a convex lens of focal length 25 cm produces a realimage at a distance of 80 cm when an object is placedat a distance of 40 cm from the combination. Find thefocal length and power of the concave lens.Ans.-4 m,- 0.25 D. |
| Answer» | |