Question

when the distance between the object and the screen is more than 4f. we can obtain image of the object on the screen for the two positions of the lens . it is called displacement method. in one case, the image is magnified and in the other case, if i1 and i2 be the sizes of the two images , then the size of the object is​

Answer 1

Answer:

it is called displacemeng method . in on case , the image is magnified and in the other case , if i1 and a2 be the sizes of the two image .