23_Chapter 23 HomeworkCH23 Mirrors and Lenses

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

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Mirrors and Lenses 289 (b) The overall magnification is () 12 25.0 cm 30.0 cm 2.50 15.0 cm 20.0 cm qq MMM pp   == = = +     (c) Since 0 q < , the final image is 2 virtual ; and since 0 M > , it is upright 23.43 From the thin lens equation, ( )( ) 11 1 4.00 cm 8.00 cm 8.00 cm 4.00 cm 8.00 cm pf q = −− The magnification by the first lens is ( ) 1 1 1 8.00 cm 2.00 4.00 cm q M p =− =+ The virtual image formed by the first lens is the object for the second lens, so 21 6.00 cm 14.0 cm pq = + and the thin lens equation gives ( )( ) 22 2 14.0 cm 16.0 14.0 cm 16. q cm 7.47 cm 0 cm
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This document was uploaded on 10/20/2011.

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