Week 35 Assignment 2013-2014 (5694136)
1. - Question Details Giancoli5 23.P.031. [117363]
A diver shines a flashlight upward from beneath the water at a 44.5° angle to the vertical. At what angle
does the light leave the water?
68.8°
2. - Question Details Giancoli5 23.P.037. [8638]
An aquarium filled with water has flat glass sides whose index of refraction is 1.52. A
beam of light from outside the aquarium strikes the glass at a θ = 45.6° angle to the
perpendicular (Fig. 23-53).
Figure 23-53.
(a) What is the angle of this light ray when it enters the glass?
28° (from the normal)
(b) What is the angle of this light ray when it then enters the water?
32.5° (from the normal)
(c) What would be the refracted angle if the ray entered the water directly?
32.5° (from the normal)
3. - Question Details Optics bench 1 [1760164]
Consider the optics bench shown below. The object
is a light bulb, set at the 16.9 cm mark on the
meterstick. The screen is set at the 95.9 cm mark,
and the lens is at the 54.8 cm mark.
A. What is the object distance?
37.9 cm
B. What is the image distance?
41.1 cm
C. What is the focal length of the lens?
19.7 cm
D. What is the magnification of the image?
-1.08
4. - Question Details Optics diffraction lab setup 1
Consider the optics bench setup shown below. The
screen is at the "zero" end of a two-meter stick, and
the grating is at the 197 cm mark on the stick. The
grating has a grid spacing of 0.0386 mm. When the
laser pointer is turned on, it produces a diffraction
pattern on the screen with 20 bright spots in it. The
pattern is 54.8 cm wide.
A. What is d?
3.86e-05 m
B. What is x?
0.548 m
C. What is L?
1.97 m
D. What is n?
19
E. What is λ, in nanometers?
565 nm
5. - Question Details Giancoli5 23.P.052. [8653]
A stamp collector uses a converging lens with focal length 35 cm to view a stamp 15 cm in front of the
lens.
(a) Where is the image located? (Enter a negative answer if the image forms behind the lens.)
-26.3cm
(b) What is the magnification?
1.75✕
6. - Question Details Giancoli5 23.P.060. [8661]
Use appropriate sign conventions for image distance and height.
(a) A 2.20 cm high insect is 1.21 m from a 135 mm focal-length lens.
What is the image distance?
152mm
How high is the image?
-0.276cm
Select all that are true.
The image is in front of the lens.
virtual.
The image is behind the lens.
The image is real.
The image is inverted.
The image is
The image is upright.
(b) Assume that f = -135 mm.
What is the image distance?
-121mm
How high is the image?
0.221cm
Select all that are true.
The image is real.
virtual.
The image is in front of the lens.
The image is behind the lens.
The image is upright.
The image is
The image is inverted.
7. - Question Details Giancoli5 25.P.009. [8844]
A nature photographer wishes to photograph a 17 m tall tree from a distance of 45 m. What focal-length
lens should be used if the image is to fill the 35 mm height of the film?
92.5
mm
8. - Question Details Giancoli5 25.P.024. [8859]
A small insect is placed 5.22 cm from a +6.12 cm focal-length lens. (Use the correct sign conventions for
the following answers.)
(a) Calculate the image distance.
-35.5
cm (from the lens)
(b) Calculate the angular magnification.
4.08✕
Select all that correctly describe the image.
reduced
enlarged
opposite the object
virtual
on the same side of the lens as the object
upright
real
on the side of the lens
inverted
9. - Question Details Giancoli5 25.P.075. [8910]
A movie star catches a reporter shooting pictures of her at home. She claims the reporter was trespassing
and to prove her point, she gives as evidence the film she seized. Her 1.76 m height is 8.27 mm high on the
film, and the focal length of the camera lens was 200 mm. How far away from the subject was the reporter
standing?
42.8m
10. - Question Details Giancoli5 23.P.024. [68918]
A 4.5 cm tall object is placed 29 cm in front of a spherical mirror. It is desired to produce a virtual image
that is erect and 4.0 cm tall.
(a) What type of mirror should be used?
concave mirror
convex mirror
(b) How far from the surface of the mirror is the image located? (Your answer should be positive if the
image is in front of the mirror and negative if the image is behind it.)
-25.8cm
(c) What is the focal length of the mirror?
-232cm
(d) What is the radius of curvature of the mirror?
-464cm