This exam consists of 20 questions; two-choice questions are worth
2 points each, three-choice questions are worth 3 points each,
five-choice questions are worth 6 points each. The maximum possible
score is 93. When the exam was given, the minimum "A" score was 76;
the minimum "B" was 67; the minimum "C" was 48; the minimum "D"
was 31. The mean was 62.7; the median was 67. Click here to see formula sheet 1, formula sheet 2 that came with the exam.
(a) q1 = 0; q2 = 0; q3 = 90°
(b) q1 = 0; q2 = 90°; q3 = 90°
(c) q1 = 90°; q2 = 0; q3 = 90°
(d) q1 = 0; q2 = 45°; q3 = 90°
(e) q1 = 30°; q2 = 60°; q3 = 90°
(a) 95 cm
(b) 32 cm
(c) 21 cm
(d) -21 cm
(e) -32 cm
(a) The first-order maximum of green light appears closer to the
central maximum than that of blue light.
(b) The first-order maximum of green light appears further from the central
maximum than that of red light.
(c) The first-order maximum of green light appears closer to the central
maximum than that of red light.
(d) (a) and (b) are both correct statements.
(e) (b) or (c) depending on the separation between the slits
(a) FL and FM are not changed.
(b) They change, but FL is still the same as FM.
(c) FL increases but FM does not change.
(d) Both increase, but FL increases more.
(e) FL decreases, but FM does not change.
A mirror is made by spraying reflecting paint on the inside of a portion
of the surface of a sphere as shown above. The location of the center
of the sphere is indicated. An image (either real or virtual) of the
object shown may be formed by the mirror. (Regions II and III have the
The image is located in region:
(e) II or III
(a) 1.5 × 107 m apart
(b) 1.5 × 1010 m apart
(c) 1.5 × 1012 m apart
(d) 1.5 × 1014 m apart
(e) 1.5 × 1016 m apart
Monochromatic light is incident upon two narrow slits separated by a
distance d = 2.3 x 10-3 m before striking a screen 4.3 meters
away. The distance between the central and first bright fringe is
1.1 ´ 10-3 m. (You may
approximate sin(q) » tan(q) » q .)
Calculate the wavelength of the light.
(a) l = 588 nm
(b) l = 550 nm
(c) l = 444 nm
(c) remains the same.
In the figure are shown two lenses. The focal length
f1 is unknown, but f2 = 12
cm. The lenses are separated by 30 cm. When an object 1
cm high is located 4 cm to the left of the first lens, it
produces an image (not drawn) 12 cm to the right of the first
lens. (Note: DRAWING IS NOT TO SCALE!)
Find f1 the focal length of the first lens.
(a) f1 = +3.33 cm
(b) f1 = +3.00 cm
(c) f1 = -6.00 cm
(a) d2 = 36 cm
(b) d2 = 120 cm
(c) d2 = 210 cm
(a) h2 = 6 cm
(b) h2 = 14 cm
(c) h2 = 28 cm
A person standing on the bank at the edge of a pond sees a fish
beneath the surface as shown in the figure. Note that certain distances
and the angle f (measured from the
horizontal) for the line of sight at which the fish is seen are given.
The surface of the bank can be considered to be level with the surface
of the pond. The index of refraction of the water is 1.3. (Note:
DRAWING IS NOT TO SCALE!)
What is the true depth of the real fish beneath the surface?
(a) 2.5 m
(b) 3.6 m
(c) 4.5 m
(d) 5.6 m
(e) 7.8 m
Two thick glass plates (with index of refraction n = 1.5 are
separated by a distance s as shown in the figure below. Light of
wavelength l = 560 nm (in vacuum) is
constructively reflected when illuminated perpendicularly from
above. Initially the gap between the plates is filled with air (n =
What is the minimum separation, s, for which this constructive
interference can occur.
(a) 93 nm
(b) 100 nm
(c) 140 nm
(d) 186 nm
(e) 280 nm
Calculate w, the width of the slit:
(a) w = 0.18 mm
(b) w = 0.37 mm
(c) w = 0.55 mm
(d) w = 0.73 mm
(e) w = 0.80 mm