The lowest tone produced by a certain organ comes from a 3.0-m pipe with both ends open. If the speed of sound is 340m/s, the frequency of this tone is approximately:
► A. 7Hz
► B. 14 Hz
► C. 28 Hz
► D. 57 Hz
A net torque applied to a rigid object always tends to produce:
► linear acceleration
► rotational equilibrium
► angular acceleration
► rotational inertia
19. A stone is released from rest from the edge of a building roof 190 m above the ground.
Neglecting air resistance, the speed of the stone, just before striking the ground, is:
A) 43 m/s
B) 61 m/s
C) 120 m/s
D) 190 m/s
E) 1400 m/s
20. Three blocks (A,B,C), each having mass M, are connected by strings as shown. Block C
is pulled to the right by a force F
that causes the entire system to accelerate. Neglecting
friction, the net force on block B is:
A) zero
B) F/3
C) F/2
D) 2F/3
E) F
To raise the pitch of a certain piano string, the piano tuner:
► A. loosens the string
► B. tightens the string
► C. shortens the string
► D. lengthens the string
A force of 5000N is applied outwardly to each end of a 5.0-m long rod with a radius of 34.0 cm and a Young's modulus of 125 × 108N/m2. The elongation of the rod is:
► 0.0020mm
► 0.0040mm
► 0.14mm
► 0.55mm
A particle oscillating in simple harmonic motion is:
► never in equilibrium because it is in motion
► never in equilibrium because there is always a force
► in equilibrium at the ends of its path because its velocity is zero there
► in equilibrium at the center of its path because the acceleration is zero there
7. One object is thrown vertically upward with an initial velocity of 100 m/s and another
object with an initial velocity of 10 m/s. The maximum height reached by the first
object will be ______ that of the other.
A) 10 times
B) 100 times
C) 1000 times
D) 10,000 times
E) none of these
8. An object is thrown straight up from ground level with a speed of 50 m/s. If the
magnitude of the local gravitational strength is g = 10 N/kg its distance above ground
level 6.0 s later is:
A) 0.00 m
B) 270 m
C) 330 m
D) 480 m
E) none of these
A
bucket of water is pushed from left to right with increasing speed across a
horizontal surface.
Consider the pressure at two points at the same level in the water.
► It is the same
► It is higher at the point on the left
► It is higher at the point on the right
► At first it is higher at the point on the left but as the bucket speeds up it
is lower there
PHY101 - Physics - Question No: 5 (M - 1)
An organ pipe with both ends open is 0.85m long. Assuming that the speed of
sound is 340m/s, the frequency of the third harmonic of this pipe is:
► A. 200 Hz
► B. 300 Hz
► C. 400 Hz
PHY101 - Physics - Question No: 6 ( M - 1 )
Capacitors C1 and C2 are connected in series. The equivalent capacitance is
given by
► C1C2/(C1 + C2)
► (C1 + C2)/C1C2
► 1/(C1 + C2)
► C1/C2
PHY101 - Physics - Question No: 7 ( M - 1 )
If the potential difference across a resistor is doubled:
► only the current is doubled
► only the current is halved
► only the resistance is doubled
► only the resistance is halved
In simple harmonic motion, the restoring force must be proportional to the:
► amplitude
► frequency
► velocity
► displacement
A 160-N child sits on a light swing and is pulled back and held with a horizontal force of 100 N. The magnitude of the tension force of each of the two supporting ropes is:
► 60N
► 94N
► 120N
► 190N
An object attached to one end of a spring makes 20 vibrations in 10 s. Its angular frequency is:
► 12.6 rad/s
► 1.57 rad/s
► 2.0 rad/s
► 6.3 rad/s
Which of the following electromagnetic radiations has photons with the
greatest energy?
► blue light
► yellow light
► x rays
► radio waves
PHY101 - Physics - Question No: 15 ( M - 1 )
A virtual image is one:
► toward which light rays converge but do not pass through
► from which light rays diverge as they pass through
► toward which light rays converge and pass through
► from which light rays diverge but do not pass through
PHY101 - Physics - Question No: 16 ( M - 1 )
What is the unit of magnification factor?
► meter.Kelvin
► radian.Kelvin
► degree.Kelvin
► no units
For an object in equilibrium the net torque acting on it vanishes only if each torque is calculated about:
► the center of mass
► the center of gravity
► the geometrical center
► the same point
Ten seconds after an electric fan is turned on, the fan rotates at 300 rev/min. Its average angular acceleration is:
► 3.14 rad/s2
► 30 rad/s2
► 30 rev/s2
► 50 rev/min2
► 1800 rev/s2
Which of the following is a scalar quantity?
A.Speed
B.Velocity
C.Displacement
D.Acceleration
E.Noneofthese
16. A heavy ball is suspended as shown. A quick jerk on the lower string will break that
string but a slow pull on the lower string will break the upper string. The first result
occurs because:
A) the force is too small to move the ball
B) action and reaction is operating
C) the ball has inertia
D) air friction holds the ball back
E) the ball has too much energy
17. The unit of force called the newton is:
A) 9.8 kg · m/s2
B) 1 kg · m/s2
C) defined by means of Newton's third law
D) 1 kg of mass
E) 1 kg of force
A plane traveling north at 200m/s turns and then travels south at 200m/s. The change in its velocity is:
A.zero
B.200m/snorth
C.200m/ssouth
D.400m/snorth
E.400m/ssouth
An object moving in a circle at constant speed:
► must have only one force acting on it
► is not accelerating
► is held to its path by centrifugal force
► has an acceleration of constant magnitude
When you step on the accelerator to increase the speed of your car, the force that accelerates the caris:
A.the force of your foot on the accelerator
B.the force of friction of the road on the tires
C.the force of the engine on the drive shaft
D. the normal force of the road on tires
A rifle of mass M is initially at rest but free to recoil. It fires a bullet of mass m and velocity v(relative to the ground). After firing, the velocity of the rifle(relative to the ground)is:
A. −mv
B. −Mv/m
C. −mv/M
D. −v
E. mv/M
Room temperature is about 20 degrees on the:
Select correct option:
Kelvin scale
Celsius scale
Fahrenheit scale
Absolute scale
A particle with zero mass and energy E carries momentum:
Select correct option:
Ec
Ec2
vEc
Room temperature is about 20 degrees on the:
Select correct option:
Kelvin scale
Celsius scale
Fahrenheit scale
Absolute scale
A particle with zero mass and energy E carries momentum:
Select correct option:
Ec
Ec2
vEc
1 mi is equivalent to 1609 m so 55 mph is:
A 15 m/s
B 25 m/s
C 66 m/s
D 88 m/s
1. A right circular cylinder with a radius of 2.3 cm and a height of 1.4 cm has a total
surface area of:
A) 1.7 × 10–3 m2
B) 3.2 × 10–3 m2
C) 2.0 × 10–3 m3
D) 5.3 × 10–3 m2
E) 7.4 × 10–3 m2
2. A square with an edge of exactly 1 cm has an area of:
A) 10–6 m2
B) 10–4 m2
C) 102 m2
D) 104 m2
E) 106 m2
3. Suppose A = BnCm, where A has dimensions length · time, B has dimensions length2 ·
time–1, and C has dimensions length · time2. Then the exponents n and m have the
values:
A) 2/3; 1/3
B) 2; 3
C) 4/5; –1/5
D) 1/5; 3/5
E) 1/2; 1/2
Interference of light is evidence that:
► the speed of light is very large
► light is a transverse wave
► light is a wave phenomenon
► light is electromagnetic in character
PHY101 - Physics - Question No: 14 ( M - 1 )
Fahrenheit and Kelvin scales agree numerically at a reading of:
► -40
► 0
► 273
► 574
PHY101 - Physics - Question No: 15 ( M - 1 )
According to the theory of relativity:
► moving clocks run fast
► energy is not conserved in high speed collisions
► the speed of light must be measured relative to the ether
► none of the above are true
PHY101 - Physics - Question No: 16 ( M - 1 )
Light from a stationary spaceship is observed, and then the spaceship moves
directly away from the observer at high speed while still emitting the light. As
a result, the light seen by the observer has:
► higher frequency and a longer wavelength than before
► lower frequency and a shorter wavelength than before
► higher frequency and a shorter wavelength than before
► lower frequency and a longer wavelength than before
7. 1 m is equivalent to 3.281 ft. A cube with an edge of 1.5 ft has a volume of:
A) 1.2 × 102 m3
B) 9.6 × 10–2 m3
C) 10.5 m3
D) 9.5 × 10–2 m3
E) 0.21 m3
8. There is no SI base unit for area because:
A) an area has no thickness; hence no physical standard can be built
B) we live in a three (not a two) dimensional world
C) it is impossible to express square feet in terms of meters
D) area can be expressed in terms of square meters
E) area is not an important physical quantity
9. Which of the following is closest to a yard in length?
A) 0.01 m
B) 0.1 m
C) 1 m
D) 100 m
E) 1000 m
10. A marble has a radius of 2 mm. The order of magnitude of the number of these marbles
that can be placed in a jar with a radius of 3 cm and a height of 10 cm is:
A) 10
B) 102
C) 104
D) 106
E) 198
47. An electron volt is :
A. the force acting on an electron in a field of 1N/C
B. the force required to move an electron 1 meter
C. the energy gained by an electron in moving through a potential difference of 1 volt
D. the energy needed to move an electron through 1 meter in any electric field
E. the work done when 1 coulomb of charge is moved through a potential difference of 1 volt.
ans: C
48. An electron has charge −e and mass me. A proton has charge e and mass 1840me. A “proton volt” is equal to:
A. 1 eV
B. 1840 eV
C. (1/1840) eV
D. √1840 eV
E. (1/√1840) eV
A. the force acting on an electron in a field of 1N/C
B. the force required to move an electron 1 meter
C. the energy gained by an electron in moving through a potential difference of 1 volt
D. the energy needed to move an electron through 1 meter in any electric field
E. the work done when 1 coulomb of charge is moved through a potential difference of 1 volt.
ans: C
48. An electron has charge −e and mass me. A proton has charge e and mass 1840me. A “proton volt” is equal to:
A. 1 eV
B. 1840 eV
C. (1/1840) eV
D. √1840 eV
E. (1/√1840) eV
ans: A
11. 5.0 × 104 × 3.0 × 106 =
A) 1.5 × 109
B) 1.5 × 1010
C) 1.5 × 1011
D) 1.5 × 1012
E) 1.5 × 1013
12. The number of significant figures in 15.0 is:
A) 1
B) 2
C) 3
D) 4
E) 5
13. 1.513 + 27.3 =
A) 29
B) 28.8
C) 28.9
D) 28.81
E) 28.813
14. The order of magnitude of the number 0.0649 is:
A) –2
B) 6 × 10–2
C) 10–2
D) 10–1
E) 0.06
15. 5.0 × 105 + 3.0 × 106 =
A) 8.0 × 105
B) 8.0 × 106
C) 5.3 × 105
D) 3.5 × 105
E) 3.5 × 106
16. A cubic box with an edge of exactly 1 cm has a volume of:
A) 10–9 m3
B) 10–6 m3
C) 10–3 m3
D) 103 m3
E) 106 m3
17. A right circular cylinder with a radius of 2.3 cm and a height of 1.4 m has a volume of:
A) 0.20 m3
B) 0.14 m3
C) 9.3 × 10–3 m3
D) 2.3 × 10–3 m3
E) 7.4 × 10–4 m3
20. 1 mi is equivalent to 1609 m so 55 mph is:
A) 15 m/s
B) 25 m/s
C) 66 m/s
D) 88 m/s
E) 1500 m/s
The lowest tone produced by a certain organ comes from a 3.0-m pipe with both ends open. If the speed of sound is 340m/s, the frequency of this tone is approximately:
► A. 7Hz
► B. 14 Hz
► C. 28 Hz
► D. 57 Hz
To raise the pitch of a certain piano string, the piano tuner:
► A. loosens the string
► B. tightens the string
► C. shortens the string
► D. lengthens the string
A force of 5000N is applied outwardly to each end of a 5.0-m long rod with a radius of 34.0 cm and a Young's modulus of 125 × 108N/m2. The elongation of the rod is:
► 0.0020mm
► 0.0040mm
► 0.14mm
► 0.55mm
A particle oscillating in simple harmonic motion is:
► never in equilibrium because it is in motion
► never in equilibrium because there is always a force
► in equilibrium at the ends of its path because its velocity is zero there
► in equilibrium at the center of its path because the acceleration is zero there
In simple harmonic motion, the restoring force must be proportional to the:
► amplitude
► frequency
► velocity
► displacement
A 160-N child sits on a light swing and is pulled back and held with a horizontal force of 100 N. The magnitude of the tension force of each of the two supporting ropes is:
► 60N
► 94N
► 120N
► 190N
An object attached to one end of a spring makes 20 vibrations in 10 s. Its angular frequency is:
► 12.6 rad/s
► 1.57 rad/s
► 2.0 rad/s
► 6.3 rad/s
19. 10C of charge are placed on a spherical conducting shell. A particle with a charge of −3C is placed at the center of the cavity. The net charge on the outer surface of the shell is:
A. −7C
B. −3C
C. 0C
D. +3C
E. +7C
ans: E
A. −7C
B. −3C
C. 0C
D. +3C
E. +7C
ans: E
20. A 30-N/C uniform electric field points perpendicularly toward the left face of a large neutral conducting sheet. The surface charge density in C/m2 on the left and right faces, respectively, are:
A. −2.7 × 10−9 C/m2; +2.7 × 10−9 C/m2
B. +2.7 × 10−9 C/m2; −2.7 × 10−9 C/m2
C. −5.3 × 10−9 C/m2; +5.3 × 10−9 C/m2
D. +5.3 × 10−9 C/m2; −5.3 × 10−9 C/m2
E. 0; 0
A. −2.7 × 10−9 C/m2; +2.7 × 10−9 C/m2
B. +2.7 × 10−9 C/m2; −2.7 × 10−9 C/m2
C. −5.3 × 10−9 C/m2; +5.3 × 10−9 C/m2
D. +5.3 × 10−9 C/m2; −5.3 × 10−9 C/m2
E. 0; 0
ans: A
For an object in equilibrium the net torque acting on it vanishes only if each torque is calculated about:
► the center of mass
► the center of gravity
► the geometrical center
► the same point
Ten seconds after an electric fan is turned on, the fan rotates at 300 rev/min. Its average angular acceleration is:
► 3.14 rad/s2
► 30 rad/s2
► 30 rev/s2
► 50 rev/min2
► 1800 rev/s2
A 4.0-N puck is traveling at 3.0m/s. It strikes a 8.0-N puck, which is stationary. The two pucks stick together. Their common final speed is:
► 1.0m/s
► 1.5m/s
► 2.0m/s
► 2.3m/s
An object moving in a circle at constant speed:
► must have only one force acting on it
► is not accelerating
► is held to its path by centrifugal force
► has an acceleration of constant magnitude
A plane traveling north at 200m/s turns and then travels south at 200m/s. The change in its velocity is:
► 400m/s north
► 400m/s south
► zero
► 200m/s south
At time t = 0 a car has a velocity of 16 m/s. It slows down with an acceleration given by −0.50t, in m/s2 for t in seconds. It stops at t =
► 64 s
► 32 s
► 16 s
► 8.0 s
The quantum number n is most closely associated with what property of the
electron in a hydrogen atom?
► Energy
► Orbital angular momentum
► Spin angular momentum
► Magnetic moment
PHY101 - Physics - Question No: 19 ( M - 1 )
The quantum number ms is most closely associated with what property of the
electron in an atom?
► Magnitude of the orbital angular momentum
► Energy
► z component of the spin angular momentum
► z component of the orbital angular momentum
PHY101 - Physics - Question No: 20 ( M - 1 )
As the wavelength of a wave in a uniform medium increases, its speed will _____.
► Decrease
► Increase
► Remain the same
► None of these
1 mi is equivalent to 1609 m so 55 mph is:
► 15 m/s
► 25 m/s
► 66 m/s
► 88 m/s
A 4.0-N puck is traveling at 3.0m/s. It strikes a 8.0-N puck, which is stationary. The two pucks stick together. Their common final speed is:
► 1.0m/s
► 1.5m/s
► 2.0m/s
► 2.3m/s
A plane traveling north at 200m/s turns and then travels south at 200m/s. The change in its velocity is:
► 400m/s north
► 400m/s south
► zero
► 200m/s south
18. A nanosecond is:
A) 109 s
B) 10–9 s
C) 10–10 s
D) 10–10 s
E) 10–12 s
19. The SI base unit for mass is:
A) gram
B) pound
C) kilogram
D) ounce
E) kilopound
At time t = 0 a car has a velocity of 16 m/s. It slows down with an acceleration given by −0.50t, in m/s2 for t in seconds. It stops at t =
► 64 s
► 32 s
► 16 s
► 8.0 s
1 mi is equivalent to 1609 m so 55 mph is:
► 15 m/s
► 25 m/s
► 66 m/s
► 88 m/s
4. Which of the following weighs about a pound?
A) 0.05 kg
B) 0.5 kg
C) 5 kg
D) 50 kg
E) 500 kg
5. The SI standard of time is based on:
A) the daily rotation of the earth
B) the frequency of light emitted by R86
C) the yearly revolution of the earth about the sun
D) a precision pendulum clock
E) none of these
6. The SI standard of length is based on:
A) the distance from the north pole to the equator along a meridian passing through
Paris
B) wavelength of light emitted by Hg198
C) wavelength of light emitted by Kr86
D) a precision meter stick in Paris
E) the speed of light
E/c
The quantum number ms is most closely associated with what property of the electron in an atom?
Select correct option:
Magnitude of the orbital angular momentum
Energy
z component of the spin angular momentum
z component of the orbital angular momentum
J.J.Thompson’s measurement of e/m for electrons provides evidence of the:
Select correct option:
Wave nature of matter
Particle nature of matter
Wave nature of radiation
Particle nature of radiation
During a slow adiabatic expansion of a gas:
Select correct option:
The pressure remains constant
Energy is added as heat
Work is done on the gas
No energy enters or leaves as heat
1. A ball is in free fall. Upward is taken to be the positive direction. The displacement of
the ball during a short time interval is:
A) positive during both ascent and descent
B) negative during both ascent and descent
C) negative during ascent and positive during descent
D) positive during ascent and negative during descent
E) none of the above
2. An object is thrown straight down with an initial speed of 4 m/s from a window which is
8 m above the ground. The time it takes the object to reach the ground is:
A) 0.80 s
B) 0.93 s
C) 1.3 s
D) 1.7 s
E) 2.0 s
3. A car travels east at constant velocity. The net force on the car is:
A) east
B) west
C) up
D) down
E) zero
4. A freely falling body has a constant acceleration with a magnitude of 9.8 m/s2. This
means that:
A) the body falls 9.8 m during each second
B) the body falls 9.8 m during the first second only
C) the speed of the body increases by 9.8 m/s during each second
D) the magnitude of the acceleration of the body increases by 9.8 m/s2 during each
second
E) the magnitude of the acceleration of the body decreases by 9.8 m/s2 during each
second
5. When a certain force is applied to the standard kilogram its acceleration is 5.0 m/s2.
When the same force is applied to another object its acceleration is one-fifth as much.
The mass of the object is:
A) 0.2 kg
B) 0.5 kg
C) 1.0 kg
D) 5.0 kg
E) 10 kg
6. An object dropped from the window of a tall building hits the ground in 12.0 s. If its
acceleration has a magnitude of 9.80 m/s2, the height of the window above the ground
is:
A) 29.4 m
B) 58.8 m
C) 118 m
D) 353 m
E) 706 m
9. Three books (X, Y, and Z) rest on a table. The gravitational force on each book is
indicated. The net force on book Y is:
A) 4 N down
B) 5 N up
C) 9 N down
D) zero
E) none of these
10. A feather and a lead ball are dropped from rest in vacuum on the Moon. The
acceleration of the feather is:
A) more than that of the lead ball
B) the same as that of the lead ball
C) less than that of the lead ball
D) 9.8 m/s2
E) zero since it floats in a vacuum
11. Acceleration is always in the direction:
A) of the displacement
B) of the initial velocity
C) of the final velocity
D) of the net force
E) opposite to the frictional force
12. An example of an inertial reference frame is:
A) any reference frame that is not accelerating
B) a reference frame attached to a particle on which there are no forces
C) any reference frame that is at rest
D) a reference frame attached to the center of the universe
E) a reference frame attached to Earth
13. An object rests on a horizontal frictionless surface. A horizontal force of magnitude F is
applied. This force produces an acceleration:
A) only if F is larger than the weight of the object
B) only while the object suddenly changes from rest to motion
C) always
D) only if the inertia of the object decreases
E) only if F is increasing
18. A newton is the force:
A) of gravity on a 1 kg body
B) of gravity on a 1 g body
C) that gives a 1 g body an acceleration of 1 cm/s2
D) that gives a 1 kg body an acceleration of 1 m/s2
E) that gives a 1 kg body an acceleration of 9.8 m/s2
E/c
The quantum number ms is most closely associated with what property of the electron in an atom?
Select correct option:
Magnitude of the orbital angular momentum
Energy
z component of the spin angular momentum
z component of the orbital angular momentum
J.J.Thompson’s measurement of e/m for electrons provides evidence of the:
Select correct option:
Wave nature of matter
Particle nature of matter
Wave nature of radiation
Particle nature of radiation
During a slow adiabatic expansion of a gas:
Select correct option:
The pressure remains constant
Energy is added as heat
Work is done on the gas
No energy enters or leaves as heat
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