25_Chapter 23 HomeworkCH23 Mirrors and Lenses

# 25_Chapter 23 HomeworkCH23 Mirrors and Lenses - Mirrors and...

This preview shows page 1. Sign up to view the full content.

Mirrors and Lenses 291 From the thin lens equation, ( ) 1 11 1 11 1 15.0 cm 15.0 cm q qf p qfq == −− When 1 15.1 cm q =+ ( ) 5.00 d = ( cm 3 1 1.82 10 p , then When cm 18.2 m = 1 45.3 cm q ) 10 d = .0 cm 1 22.4 cm p , then 0.224 m = = Thus, the range of focal distances for this camera is 0.224 m to 18.2 m 23.46 Consider an object O at distance in front of the first lens. The thin lens equation gives the image position for this lens as 1 1 p 111 qfp =− 1 1 q . ± ± ² ² ± ² ³ ± ³ ³ ² ³´³ ² ± ³ ´ ± ³´³µ µ ² ´ ² µ ± The image, I , formed by the first lens serves as the object, O , for the second lens. With the lenses in contact, this will be a virtual object if is real and will be a real object if is virtual. In either case, if the thicknesses of the lenses may be ignored,
This is the end of the preview. Sign up to access the rest of the document.

## This document was uploaded on 10/20/2011.

Ask a homework question - tutors are online