Physics 2: Optics

A concave mirror has a focal length of 40 cm. Determine the object position for which the resulting image is upright and 4 times the size of the object.

Given an object height of 3 cm and a convex lens of focal length 10cm. Determine the position and size of the produced image if the object is placed at:

A. 30 cm

B. 5 cm

A light bulb is placed to the left of a convex lens of focal length 20 cm. The image formed is enlarged 5 times and is to the right of the lens. Find the image distance and the object distance.

A diverging lens with f = -20 cm is placed 12 cm to the left of a converging lens of f = 35 cm. If a 20 m tall object is 50 cm to the left of the diverging lens, where is the final image located and how tall is the image?