In the case of the simple microscope, when the object is placed at the focus and the image is formed at infinity and we find the magnification, we find the ratio of the angle subtended by the image at the eye when the image is at D to the angle subtended by the object at the eye when the object is placed at D. i need to find the angle subtended by the image at the eye when it is placed at D.I am naming this angle B. So, tanB=B=size of image/focal length. My question is why do we take the denominator as focal length and not D according to the definition of the angle B.

Asked by ARATHI M | 23rd Dec, 2013, 10:04: PM

Expert Answer:

Answered by  | 26th Dec, 2013, 02:36: PM

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