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This isn't exactly a homework problem, per se, but this was a district assessment I already took today. I was confident that I would get a good grade, but it turns out I got a measly 65%. I don't remember the exact wording, but I do remember the general idea of it.
There are two lenses, both of which are 16cm apart. An object is 1.3cm away from the first lens.
First lens
f = 1.2cm
do = ?
di = ?
M = ?
Second lens
f = .42cm
do = ?
di = ?
M = ?
Total Magnification
Mtot = ?
di = dof/do-f
M = di/do
Mtot = M1*M2
First lens
f = 1.2cm
do = 1.3cm (given)
di = 15.6 cm
M = 12x
Second lens
f = .42
do = 16cm+1.3cm = 17.3cm
di = .43 cm
M = .025x
Total Magnification
Mtot = .3x
Looking back at it now, I think I messed up somewhere in the second lens.
I've asked friends what they got for Mtot, and the majority of them said a number around the 200s.
What am I doing wrong?
Homework Statement
There are two lenses, both of which are 16cm apart. An object is 1.3cm away from the first lens.
First lens
f = 1.2cm
do = ?
di = ?
M = ?
Second lens
f = .42cm
do = ?
di = ?
M = ?
Total Magnification
Mtot = ?
Homework Equations
di = dof/do-f
M = di/do
Mtot = M1*M2
The Attempt at a Solution
First lens
f = 1.2cm
do = 1.3cm (given)
di = 15.6 cm
M = 12x
Second lens
f = .42
do = 16cm+1.3cm = 17.3cm
di = .43 cm
M = .025x
Total Magnification
Mtot = .3x
Looking back at it now, I think I messed up somewhere in the second lens.
I've asked friends what they got for Mtot, and the majority of them said a number around the 200s.
What am I doing wrong?
