An important reason for using a very large diameter objective in an astronomical
telescope in space is
A) to increase the magnification.
B) to increase the resolution.
C) to increase the width of the field of view.
D) to form a virtual image, which is easier to look at.
E) to increase the depth of the field of view.
Nearsightedness can usually be corrected with
A) achromatic lenses.
B) diverging lenses.
C) converging lenses.
D) cylindrical lenses.
In an ac circuit, if the peak value of the voltage is 100 V, what is the rms value?
A) 141 V
B) 100 V
C) 210 V
D) 71 V
E) 120 V
Two coins carry identical charges. These two coins are lying 2.50 m apart on a table. If
each of these coins experiences a force of 2.00 N, how large is the charge on each coin?
A) 2.61 μC
B) 26.1 μC
C) 6.67 μC
D) 5.22 μC
E) 52.2 μC
What is the speed of sound in air at freezing temperature?
A) 331 mph
B) 650 m/s
C) 331 m/s
D) 650 mph
E) 1100 m/s
How fast must a spaceship travel to make the trip to a star 400. LY away in 25.3 years
of astronaut travel time?
A) 0.966c
B) 0.998c
C) 0.829c
D) 0.987c
E) 0.992c
Paul Dirac
A) set the limits on the probability of measurement accuracy (1927).
B) developed a wave equation for matter waves (1926).
C) suggested the existence of matter waves (1924).
D) discovered the positron using a cloud chamber (1932).
E) predicted the positron from relativistic quantum mechanics (1928).
In a particular case of Compton scattering, a photon collides with a free electron and
scatters backwards. The wavelength after the collision is exactly double the wavelength
before the collision. What is the wavelength of the incident photon?
A) 3.6 x 10-12 m
B) 4.8 x 10-12 m
C) 2.4 x 10-12 m
D) 1.2 x 10-12 m
E) 6.0 x 10-12 m
A telescope has an angular magnification of 250. when operated with a 20. mm
eyepiece. What is the focal length of the objective?
A) 5.0 cm
B) 25. meters
C) 5000. cm
D) 5.0 meters
E) 2.5 m
FIGURE 15-8
Fig. 15-8 shows electric field lines near two electric point charges. If Q1 = -1 μC, what
is the value of Q2?
A) -1 μC
B) 0
C) +1 μC
D) +2 μC
E) -2 μC
The slope of a line connecting two points on a velocity versus time graph gives
A) instantaneous velocity.
B) average velocity.
C) instantaneous acceleration.
D) average acceleration
E) none of the given answers.
A photon of wavelength 1.50 10-10 m is scattered at an angle of 90 in the Compton
effect. The wavelength of the scattered photon is
A) 1.52 x 10-10 m
B) 1.49 x 10-10 m
C) 1.48 x 10-10 m
D) 1.51 x 10-10 m
E) 1.50 x 10-10 m
The center of mass and the center of gravity coincide
A) only if the object is symmetrical.
B) only if the object is symmetrical and it is in a uniform gravitational field.
C) if the object is in a uniform gravitational field.
D) at all times.
Tarzan swings back and forth on a long vine. His friend Jane notices 30. swings in 2.4
minutes.
(a) What is the frequency of the swing?
(b) What is the vine length?
Fig. 18-7 is a symbol for which of the following?
A) galvanometer
B) voltmeter
C) ammeter
D) fuse
E) ground
FIGURE 16-7
In Fig. 16-7, three capacitors with capacitances C1 = 4 μF, C2 = 3μF, and C3 = 2 μF, are
connected to a battery of voltage V = 12 V. What is the charge on capacitor C2?
A) 16 μC
B) 32 μC
C) 2μC
D) 8 μC
E) 4 μC
FIGURE 3-7
A 960. m wide river flows at 16. m/s as shown in Fig. 3-7. Alice and John have a race in
identical boats which travel 20. m/s in still water. Alice leaves point A and steers so that
she goes straight to point B directly across and then back to A. John steers up to point C
(960. m upstream) and then returns to A.
(a) Which person arrived back at A first?
(b) How much sooner did the winner arrive back at A?
The graph in Fig. 2-3 plots the velocity of two cars (A and B) along the same straight
road. Which car reverses direction?
A) Car A
B) Car B
C) insufficient information
D) both cars A & B
E) neither car A nor B
The cross-sectional area of an adjustable single loop is reduced from 1.0 m2 to 0.25 m2
in 0.10 s. What is the average emf that is induced in this coil if it is in a region where B
= 2.0 T upward, and the coil’s plane is perpendicular to B?
A) 21 V
B) 15 V
C) 18 V
D) 12 V
E) 0 V
FIGURE 5-5
The force that a squirrel exerts on a nut it has found is observed over a 10. second
interval, as shown in Fig. 5-5. How much work did the squirrel do during that 10. s?
A) 12.5 J
B) 50. J
C) 25. J
D) 22. J
E) zero
A 60.0-kg mass person wishes to push a 120-kg mass box across a level floor. The
coefficient of static friction between the person’s shoes and the floor is 0.700. What is
the maximum coefficient of static friction between the box and the floor such that the
person can push horizontally on the box and cause it to start moving?
A) 0.333
B) 0.500
C) 0.350
D) 0.667
E) 0.700
The critical angle for a beam of light passing from water into air is 48.8. This means
that all light rays with an angle of incidence greater than this angle will be
A) absorbed.
B) totally transmitted.
C) partially reflected and partially transmitted.
D) totally reflected.
E) totally polarized.
Car A (mass = 1000 kg) moves to the right along a level, straight road at a speed of 6.0
m/s. It collides directly with car B (mass = 200 kg) in a completely inelastic collision.
What is the momentum after the collision if car B was initially at rest?
A) 2.0 KN-s to the right
B) 6.0 KN-s to the right
C) 8.0 KN-s to the left
D) 10. KN-s to the right
E) zero
A hydrogen atom is in the 6h state. Which one of the following is not a magnetic
quantum number?
A) 0
B) 1
C) 2
D) 4
E) 6
Which of the following has the greatest number of significant figures?
A) 03.1400
B) 314.1
C) 3.142
D) 000.3140
E) 0.003142
Assuming negligible friction, what spring constant would be needed by the spring in a
“B-B gun” to fire a 10. gram pellet to a height of 100 meters if the spring is initially
compressed 10. cm?
A) 20. N/cm
B) 20. N/m
C) 200. N/m
D) 2.0 103 N/cm
E) 2.0 10-3 N/m
If light of wavelength 700 nm is sent through a slit of width of 5.0 μm, at what angle
from the central maximum is the 4th order minimum?
A) 90
B) 34
C) 39
D) 8
E) 68
An open pipe of length L is resonating at its fundamental frequency. Which statement is
correct?
A) The wavelength is 2L and there is a displacement node at the pipe’s midpoint.
B) The wavelength is 2L and there is a displacement antinode at the pipe’s midpoint.
C) The wavelength is L and there is a displacement node at the pipe’s midpoint.
D) The wavelength is L and there is a displacement antinode at the pipe’s midpoint.
Consider an RLC circuit. The impedance of the circuit increases if XL increases.
A) always true
B) never true
C) true only if XL is greater than or equal to XC
D) true only if XL is less than or equal to XC
Refer to Fig. 2-7. If you start from the Bakery, travel to the Art Gallery, and then to the
Cafe, in 1.0 hour, what is your average speed?
A) 6.5 km/hr
B) 2.5 km/hr
C) 4.0 km/hr
D) 9.0 km/hr
E) 10.5 km/hr
At double the distance from a long current-carrying wire, the strength of the magnetic
field produced by that wire decreases to
A) 1/8 of its original value.
B) 1/4 of its original value.
C) 1/2 of its original value.
D) 1/ of its original value.
E) /3 of its original value.
What mass should be attached to a vertical spring (k = 39.5 N/m) so that the natural
vibration frequency of the system will be 1.00 Hz?
A) 2.00 kg
B) 1.56 kg
C) 1.00 kg
D) 6.29 kg
E) 39.5 kg
The length and width of a rectangle are 1.125 m and 0.606 m, respectively. Multiplying,
your calculator gives the product as 0.68175. Rounding properly to the correct number
of significant figures, the area should be written as
A) 0.7 m2.
B) 0.68 m2.
C) 0.682 m2.
D) 0.6818 m2.
E) 0.68175 m2.
A step-down transformer is needed to reduce a primary voltage of 120. V AC to
6.0 V AC. What turns ratio is required?
A car and a truck are traveling in the same direction along a straight section of highway.
The car is moving at 55. mph and the truck is moving 45. mph. What is the velocity of
the truck relative to the car?
Describe the anomalous thermal expansion property of water and its significance.
For an orbital quantum number of 2, the magnetic quantum number can take on what
allowed values?
What is the intensity of a 70. dB sound?
Name the first three isotopes of hydrogen and their nuclide symbols, and indicate which
is most common and which is most unstable.
A mercury thermometer has a bulb of volume 0.100 cm3 at 10.°C. The capillary tube
above the bulb has a cross-sectional area of 0.012 mm2. The volume thermal expansion
coefficient of mercury is 1.80 x 10-4 K-1. How much will the mercury rise when the
temperature rises to 30.°C?
Why can a 25. watt fluorescent lamp produce as much illumination as a 100. watt
incandescent lamp?
Jane walks 31 steps eastward and 16 steps southward. What is her displacement if each
step averages 0.82 meters?
A parallel light beam containing two wavelengths, 480. nm and 700. nm, strikes a plain
piece of glass at an angle of incidence of 60. The index of refraction of the glass is
1.4830 at 480. nm and 1.4760 at 700. nm. Determine the angle between the two beams
in the glass.
The surface tension of water is 0.073 N/m. How high will water rise in a capillary tube
of diameter 1.20 mm?
For an rms current of 5.0 amperes determine the maximum and peak-to-peak values.
The radius of a typical nucleus is about 5.0 x 10-15 m. Assuming this to be the
uncertainty in the position of a proton in the nucleus, estimate the uncertainty in the
proton’s energy (in eV).
State the conservation of angular momentum.
Discuss what observations convinced Rutherford that the nucleus was very small and
dense.
What does the prefix milli- stand for?
A girl weighing 450. N sits on one end of a seesaw that is 3.0 m long and is pivoted 1.3
m from the girl. If the seesaw is just balanced when a boy sits at the opposite end, what
is his weight? Neglect the weight of the seesaw.
A parallel plate capacitor is constructed with plate area of 0.40 m2 and a plate
separation of 0.10 mm. How much charge is stored on it when it is charged to a
potential difference of 12 V?
A cylindrical rod of length 12. cm and diameter 2.0 cm will just barely float in water.
What is its mass?