Consider the image formed by a refracting telescope. Suppose an opaque screen is

Question

Consider the image formed by a refracting telescope. Suppose an opaque screen is placed in front of the lower half of the objective lens. What effect will this have? A) The top half of the image will be blacked out. B) There will be no noticeable difference in the appearance of the image with the objective partially blocked or not. C) The entire image will be blacked out, since the entire lens is needed to form an image. D) The image will appear as it would if the objective were not blocked, but it will be dimmer. E) The lower half of the image will be blacked out.

Explanation / Answer

d) option

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