Question

2) (8 pts) An object is placed in front of a concave mirror of focal length f. What is the image distance if the object distance is 2f? What type of image is formed if the object distance is 2f? As the object moves toward the mirror and approaches the focal point, what does the image distance approach? What is the magnification if the object distance is £f?

Answer 1

(2) focal length=f (9) U = object distance = 2f using mirror formula * += = $+4} = = = v=image formed at distance of from the mirror. (b) Image is formed on same side of mirrou as object. Hence, image formed is real image () As object moves tapando face the inage moves avany from the focus. reaches focus, the image is at infinity (d) u = 1/2 *+-*--==+ V= -f magnification = -1/4) = -(2) when object s+1