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19. We use the lens maker’s equation, Eq. 35–10:
1
f
=(
n
−
1)
µ
1
r
1
−
1
r
2
¶
where
f
is the focal length,
n
is the index of refraction,
r
1
is the radius of curvature of the Frst surface
encountered by the light and
r
2
is the radius of curvature of the second surface. Since one surface has
twice the radius of the other and since one surface is convex to the incoming light while the other is
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This note was uploaded on 11/12/2011 for the course PHYS 2001 taught by Professor Sprunger during the Fall '08 term at LSU.
 Fall '08
 SPRUNGER
 Physics, Light

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