and undergoes two total internal reflections (Figure 28-54). As a result, the ray reverses its direction. (a) What is the minimum value of the prism's index of refraction for these internal reflections to be total? (b) How will your answer to part (a) change if instead of air the prism is submerged in oil?

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Geometric physics q 41
and undergoes two total internal reflections (Figure 28-54).
(a) What is the angle of deflection (the angle between
46
41. A ray of light enters the long side of a 45°-90°-45°
prism
fa plane
is head.
e child to
direction.
As a result, the ray reverses
What is the minimum value of the prism's index of
(а)
refraction for these internal reflections to be totalb
(b) How will your answer to part (a) change if instead
of air the prism is submerged in oil?
hang so
tnge if
s used?
ill he be
u found
notice
145°
45°
n, your
m from
poon is
Figure 28-54 Problems 41 and 59.
nger?
ont of
42. ** A ray of He-Ne laser light is incident on a 45°-90°-45
glass prism at an angle of 60°, 5.0 cm above its base, as
shown in Figure 28-55. Assume that the dimensions of
the lens are given to two significant figures.
meter.
enta-
the incident and refracted beams) for this ray as "
exits the prigm1
Transcribed Image Text:and undergoes two total internal reflections (Figure 28-54). (a) What is the angle of deflection (the angle between 46 41. A ray of light enters the long side of a 45°-90°-45° prism fa plane is head. e child to direction. As a result, the ray reverses What is the minimum value of the prism's index of (а) refraction for these internal reflections to be totalb (b) How will your answer to part (a) change if instead of air the prism is submerged in oil? hang so tnge if s used? ill he be u found notice 145° 45° n, your m from poon is Figure 28-54 Problems 41 and 59. nger? ont of 42. ** A ray of He-Ne laser light is incident on a 45°-90°-45 glass prism at an angle of 60°, 5.0 cm above its base, as shown in Figure 28-55. Assume that the dimensions of the lens are given to two significant figures. meter. enta- the incident and refracted beams) for this ray as " exits the prigm1
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