Question

for an object placed in front of a convex lens. whose radius of curvature is 20 cm from the lens the height of the image is a. smaller than the object. b. bigger than the object. c. same size as the object. d. cannot say about the size of the image​

Answer 1

Answer:

Answer: At twice the focal length, the image formed by the convex lens is real and of the same size as the object. If the lens has a focal length of 20 cm, the object must be positioned 40 cm in front of the lens, creating an inverted image of the same size as the target, 40 cm behind the lens.