Two thin lenses of power +4D and -2D are in contact. What is the focal length of the combination? If an object is placed at a distance of 25cm in front of this lens then calculate the position,nature and size of image.
Answers
Answered by
1
Answer:
+4d and -2d =+2d
Power =100/focal length
f =100/2=+50
Now 1/v-1/u =1/f
Then v=-50
Similar questions