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Mirrors and Lenses
279
(b) The ball and its image coincide when
0
p
=
and when
1122
ppp
+==
R
, or
1.00
pR
m
=
=
From
2
0
1
2
yy
yvt
a
t
∆=
+
, with
0
0
y
v
=
, the times for the ball to fall from
to
these positions are found to be
3.00 m
p
=
()
2
2
.
0
0
m
0.639
s
=
22
9.80
y
y
a
∆−
==
−
s
m
t
and
2
23
.
0
0
m
0.782
9.80 m s
t
−
−
s
23.21
From
122
nn
1
p
qR
−
+=
, with
R
→
∞
, the image position is found to be
50.0 cm
2
1
1.00
38.2 cm
1.309
n
qp
n
=−
or the virtual image is
38.2 c
the upper surface of the ice
m below
23.22
For a plane refracting surface
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This note was uploaded on 12/09/2011 for the course PHYS 2020 taught by Professor Staff during the Fall '10 term at FIU.
- Fall '10
- STAFF
- Physics
-
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