Transcript Working Backwards Task - Hidden Lenses

Working Backwards Task
– Hidden Lens
A point source will be moved
around for you in front of a lens.
The lens is hidden behind a
screen.
Answer the following on your
own
What type of lens is behind the
screen?
Concave
Convex
Cannot be
determined
te
rm
in
ed
on
C
C
an
no
t
be
C
on
ca
v
e
3.
de
2.
33% 33% 33%
ve
x
1.
1
2
3
4
5
Consult with your neighbors and
then answer again
What type of lens is behind the
screen?
Concave
Convex
Cannot be
determined
te
rm
in
ed
on
C
C
an
no
t
be
C
on
ca
v
e
3.
de
2.
33% 33% 33%
ve
x
1.
1
2
3
4
5
A point source will be moved
around for you in front of a lens.
The lens is hidden behind a
screen.
Answer the following on your
own
What type of lens is behind the
screen?
Concave
Convex
Cannot be
determined
te
rm
in
ed
on
C
C
an
no
t
be
C
on
ca
v
e
3.
de
2.
33% 33% 33%
ve
x
1.
1
2
3
4
5
Consult with your neighbors and
then answer again
What type of lens is behind the
screen?
Concave
Convex
Cannot be
determined
te
rm
in
ed
on
C
C
an
no
t
be
C
on
ca
v
e
3.
de
2.
33% 33% 33%
ve
x
1.
1
2
3
4
5