Physics, asked by Dahiya22, 11 months ago

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 rahulchanda852
1

Answer:

+4d and -2d =+2d

Power =100/focal length

f =100/2=+50

Now 1/v-1/u =1/f

Then v=-50

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