8. Practice: A 29-cm pencil is placed 35 cm in front of a convex lens and illuminated by a spotlight. The focal point of the lens is 28 cm from the lens.

A. What is the height of the pencil’s image? _______________

B. How far from the lens will the image of the pencil be focused? _______________

Show your work:

Question

8.	Practice: A 29-cm pencil is placed 35 cm in front of a convex lens and illuminated by a spotlight. The focal point of the lens is 28 cm from the lens.

A.	What is the height of the pencil’s image? _______________

B.	How far from the lens will the image of the pencil be focused? _______________

Show your work:

anonymous · Answer

Do you have any initial ideas as to how to solve this problem?

anonymous · Answer

di = image distance, do = object distance, hi = height of image, ho = height of object

anonymous · Answer

1/f = 1/di + 1/do and m = hi/ho = - di/do