Question

10. A cat sits near a converging lens (focal points indicated by black dots), and is viewed by someone standing on the opposite side. Draw rays on the picture above to show the location, size, and orientation of the image of the cat, and sketch that image.
please explain the decisions you made in how you drew the arrows

Answer 1

consider the convex lens given below. The rules for formation of an image after refraction from a lens are - :) If the ray passes through focal point f of the lens, it travels parallel to the principal axis after refrachon. Similarly if. a ray is travelling parallel to the principal ari's, after refraction it will pass through focal point. ii) the ray that passes through focal optical centre of a lens remains undeviated from its path PRINCIPAL AXIS rule- rule-2 Now, we come to our question. Let the cat be the obiect denoted by AB. This lies between focal pt. & oplical centre oflens Thus, following the rules, we draw the rays & find the properties of the image formed. F A It's clear that the rays X & Y cannot meet at the other side of the lens. Thus on producing the rays by extending them backwards can make them intersect. Thus image is formed on the same side of the lens behind the cat such an image is a virtual image. Thus, image A'B' cimage of lat) is formed behind the CA CAB) it is highly magnified C A'B'>AB) & it is erect

image of the cat formed is behind the cat on the same side of the lens,highly magnified and erect