Exercise 1:

A convex lens forms an image of a soda can. The image is inverted and 2 cm tall and appears 8 cm to the right of the lens. The height of the soda can is 10 cm. (a) Where is the can located (object distance) and (b) what is the focal point of this lens?

Exercise 2:

Four electromagnetic waves have the following frequencies, Indicate what each of their Wavelengths are and which region of the electromagnetic spectrum they fall in.

(a) 9.4 x 10^12 Hz,

(b) 6.2 x 10^14 Hz

(c) 3.0 x 10^17 Hz

Thank you very much