The image of a tree on a 35 mm color slide is 1.6 mm high. It is to be projected
ID: 2099831 • Letter: T
Question
The image of a tree on a 35 mm color slide is 1.6 mm high. It is to be projected onto a screen 5 m from the slide, and is to appear 707 mm high. (a) What focal length lens (in meters) is needed? (b) What is the distance in meters between the lens and the slide? (c) What is the magnification of the system?(a) 0.01 m
(b) -5.01 m
(c) 0 (a) 0.01 m
(b) 0.01 m
(c) 442 (a) 0.01 m
(b) -0.01 m
(c) 0 (a) 0.01 m
(b) 4.99 m
(c) 0 The image of a tree on a 35 mm color slide is 1.6 mm high. It is to be projected onto a screen 5 m from the slide, and is to appear 707 mm high. (a) What focal length lens (in meters) is needed? (b) What is the distance in meters between the lens and the slide? (c) What is the magnification of the system?
(a) 0.01 m
(b) -5.01 m
(c) 0 (a) 0.01 m
(b) 0.01 m
(c) 442 (a) 0.01 m
(b) -0.01 m
(c) 0 (a) 0.01 m
(b) 4.99 m
(c) 0
(a) 0.01 m
(b) -5.01 m
(c) 0 (a) 0.01 m
(b) 0.01 m
(c) 442 (a) 0.01 m
(b) -0.01 m
(c) 0 (a) 0.01 m
(b) 4.99 m
(c) 0 (a) 0.01 m
(b) -5.01 m
(c) 0 (a) 0.01 m
(b) 0.01 m
(c) 442 (a) 0.01 m
(b) -0.01 m
(c) 0 (a) 0.01 m
(b) 4.99 m
(c) 0
Explanation / Answer
2. Relevant equations
1/f = 1/s +1/s'
m=h'/h = -s'/s
3. The attempt at a solution
A)
h=1.7m
h' = 559 x 10-3m
s' = 8 x 10-3m
s = ?
m = 559m/1.7m = .32882 mm
.329mm = -.008mm/s
s = -24.32 mm = -.024 meters
B) Is this just asking what the focal length is?
C) m= h'/h = .329
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