Vu All Subjects Assignment Quiz GDB Handouts Available here
Aslam U Alaikum!
Dear Students
In this post we are providing you PHY101 Quiz-5 Solution Fall 2023100% correct or right solution. You’ll Download assignment Solution File From below download (Click Here For Download File) link interface
Close date feb 07, 2023
1. Metal pipes, used to carry water, sometimes burst in the winter because:
Water expands when it freezes
When light passes from air to glass, it bends:
toward the normal and slows down
Possible units for the coe?cient of volume expansion are:
1/C
A transparent refracting medium bounded by the two curved
surfaces called:
concave lens
Of the following which is the best evidence for the wave
nature of matter?
The spectral radiancy of cavity radiation
Protons emitted in photoelectric effect
Lenz’s law is in accordance with law of conservation of
Energy…confirm
2. Which of the following types of electromagnetic radiation at the greatest speed in vacuum?
All of these travels at the same speed…..confirm
3. Inductive reactance XL of an inductor is
2(pi)fL….confirm
4. Force per unit charge is:
Electric field intensity…confirm
5. The sum of electric and magnetic force is called
Lorentz force…confirm
6. Radio waves and light waves are ______.
Electromagnetic and transverse both…confirm
7. Kirchhoff’s 1st rule is the manifestation of the law of conservation of
Charge…confirm
8. Kirchhoff’s 2nd rule is the manifestation of the law of conservation of
Energy…confirm
9. The total energy in an circuit is 5.0 * 10-6 J. if L=25mH the maximum current is:
20mA…confirm
10. If Io is the peak value of an AC supply, then its rms value is given as firms
Io/square root2….confirm
11. The potential difference between the ends of a conductor is 12V. How much electrical energy is converted to other forms of energy in the conductor when 100C of charge flows through it?
1200J….confirm
12. A particle carrying a charge of 2e falls through potential difference of 3V the energy acquired by it will be:
6 eV…confirm
13. An inductor may store energy in its:
Magnetic field…confirm
14. The graphical representation of Ohm’s law is:
Straight line…confirm
15. Radio waves and light waves are _______.
Longitudinal waves…confirm
16. The increase in capacitance of a capacitor due to presence of dielectric is due to:
Electric polarization
17. The Focal length of convex lens is:
Positive…confirm
18. The AC circuit in which current and voltage are in phase the power factor is
1…confirm
19. The wavelength of red light is 700 nm. Its frequency is ______.
4.29*10^14 hertz…confirm
21. The known laws of electromagnetism before James Clerk Maxwell were following EXCEPT
Faraday’s Law…confirm
20. When some dielectric is inserted between the plates of a capacitor, then capacitance;
Increased…..confirm
21. Which of the following is NOT the characteristics of electromagnetic waves?
They can travel with different speeds in vacuum depending on frequency…..confirm
22. If electric and gravitational force on an electron in uniform electric field balance each other, then the intensity of electric field will be:
Mg/q
23. The increase in capacitance of a
24. Electric energy is measured
WaTT…confirm
25. When we accelerate the charge, which types of waves are produced
Electromagnetic waves….confirm
26. A particle device transmitted a signal in the form of electromagnetic waves of frequency 7.5 * 108Hz. What is the wavelength of the signal.
0.4m
27. A step-down transformer is used to:
Decrease the voltage
27. The quantity of deltaV/deltar is called
Potential gradient
28. Which electromagnetic radiation transmits the highest photon energy?
Gamma rays….confirm
29. The reaction of an particle at 50 Hz is 10.0 its reactance at 100Hz becomes
5.0
30. Work done on a charged particle moving in uniform magnetic field is
Zero….confirm
31. Select the correct statement
Gamma Rays have higher frequency than infrared waves…confirm
32. Which of the following have the greatest wavelength
Radio waves
33. Potentiometer can be used as
Potential divider….confirm
34. All of the followings are the different types of mental images; people generally experience them while close their eyes Except:
Solving an algebra equations
35. The nation that motivational state of the organism is understood and explained in terms of positive and negative environmental stimuli BEST connects to;
Incentive approaches
36. If one wants to increase the capacity of short-term memory, through which process more items can be held?
Chunking….confirm
37. Which physical quantity is produced by a calculation where a charge is
Energy…confirm
38. The current in a car headlamp is 2.0 A. The Headlamp is switched an for 3.0
360 C
39. If potential difference across two plates of a capacitor is doubled, then
Four times….comfirm
40. How could the unit of potential difference the volt also be written?
J/C
41. If magnetic field is doubled then magnetic energy density becomes
Four times….confirm
42. The primary of a 3.1 step-up transformer is connected to a source and the secondary this situation is P. If R is connected directly to the source it will dissipate a power of:
P/9….confirm
43. A particle having 2e charge falls through a potential difference of 5.V energy acquired by it is
10 eV
44. A generator supplies 100V to the primary call of a transformer. The primary has 50 turns and the secondary has 500 turns. The secondary voltage is
1000V
45. The combined effect of resistance and reactance is known as
Impedance…confirm
46. A transparent refracting medium bounded by the two curved surfaces called
Prism….confirm
47. A student rubs a rod held in his hand. Which action causes the rod to gain a large electrostatic charge
Rubbing a polythene rod with a woolen duster….confirm
48. A charge of 30 C flows through an electric appliance in 2.0 minutes. What is the average current in the appliance?
0.25A….confirm
51. Total flux through a closed surface depends on
Charge and -N...confirm
49. Electromagnetic waves emitted from antenna are
Transverse….confirm
50. Two parallel straight wires carrying current in same direction will.
Attract each other…confirm
51. Charge carriers in electrolysis are:
Positive and negative ions…confirm
52. Capacitive reactance XC is
1/2Ï€fC
53. The number of turns becomes double, but length remain same then magnetic field in the solenoid become
Double…confirm
54. If velocity of a conductor moving through Magnetic field B is made zero then motional emf is
-vBL
58. The amplitude modulation frequency ranges from
540 kHz to 1600 kHz…confirm from net
55. Average value of current and voltage over complete cycle is:
Zero..confirm
56. A detector is used to detect the speed at a particular wave if the frequency of an electromagnetic signal is 400 MHz, the speed define the detector is
300000 km/s
57. The product of resistance and capacitance is called
Time….confirm
58. Greenhouse gases absorb ____ radiation
Infrared…confirm
59. In RL series circuit phase angle is given by:
tan – 1(wL/ R)…confirm
60. One tesla is equal to
N/Am
61. An LC series circuit an inductance L and a capacitance C has an oscillation frequency f. Two inductors each with inductance L, and two capacitors, each with capacitance C, are all wired in series and the circuit is completed. The oscillation frequency is:
f…..confirm
62. Capacitance of a capacitor in vacuum is given by
Aεo/d….confirm
63. Force on a charged particle is zero when projected at angle with the magnetic field
0 degree….confirm
64. If an electron of charge is accelerated through a potential difference V, it will acquire energy.
Ve….confirm
65. In case of metallic conductors, the charge carriers are:
Electrons…confirm
66. Tesla is a unit of
Magnetic flux….confirm
67. When a charge is projected perpendicular to a uniform magnetic field, its path is:
Circular…..confirm
68. Electromagnetic waves do not transport
Charge….confirm
69. The concept of an electric field lines is introduced by
Faraday….confirm
70. A capacitor in an LC oscillator has a maximum potential difference of 15V and a maximum energy of 360 uJ. At a certain instant the energy in the capacitor is 40 uJ. At that instant what is the emf induced in the inductor
5V….confirm
71. The wave form of alternating voltage is a:
Sine wave….confirm
72. If velocity of a conductor moving through a magnetic field B is made zero then motional emf is:
-vBL…confirm
72. Which one of is in the order of decreasing frequency?
Ultraviolet rays, visible light, radio waves…confirm
73. The lenz’s law refers to:
Induced current….confirm
74. Which of the following statements is Not true about electromagnetic waves?
The electromagnetic radiation from a burning candle is polarized…confirm
75. Phase different between V and I of on A.C through resistor is:
0 degree
76. Which of the following is equivalent to 1 V
1 J/C…..confirm
77. Which of the following is equivalent to one coulomb
One ampere second….confirm
The reason there are two slits, rather than one, in a young’s experiment is:
To create a path length difference….confirm from net
Which of the following types of electromagnetic radiation travels at the greatest speed in vaccum?
(Radio, gamma, x)rays .. all options….confirm
Electric energy is measured :
Watt….confirm from ent
The lenz’s law refers to :
Induced current
The films formed due to detergents(soap/shampoo) are due to
A free electron and a free proton have the same kinetic energy . this means that, compared to the matter wave associated with the proton, the matter wave associated with the electron has:
A longer wavelength and a smaller frequency …..confirm from net
Of the following. Compton scattering from electrons is most easily observed for:
X rays
Of the following which might NOT vanish over one cycle of a cyclic process?
The work done by the substance….confirm from net
The most refined form of matter is:
Light
How could the unit of potential difference, the volt, also be written?
J/C
In Compton scattering from stationary particles the maximum change in wavelength can be made smaller by using.
More massive particles
Hotness or coldness of an object is represented in terms of:
Temperature
The unit of thermal conductivity might be:
Cal/(cm*s*C?)
During the time that latent heat is involved in a change of state.
The temperature does not change
A laser in a compact disc player generates light that has a wavelength of 780 nm in air. The light then enters into the plastic of a CD. If the index of refraction of plastic is 1.55, the speed of this light once enter the plastic is ___________.
x 10^8 m/s
Antiparticle of electron is
Positron…..confirm from net
When some dielectric is inserted between the plates of a capacitor then capacitance
Increases….confirm from net
The centre of Newton ring is dark due to:
Destrictive interference
If two objects are in thermal equilibrium with each other:
They cannot be at different temperatures….confirm from net
The graphical representation of Ohm’s law is
Straight line…..confirm from net
A particular device transmitted a signal in the form of electromagnetic waves of frequency 7.5 * 108 Hz. What is the wavelength of the signal?
0.4m
Which physical quantity is produced by a calculation where a charge is multiplied by a potential difference (p.d)?
Energy….confirm form net
A transparent refracting medium bounded by the two curved surfaces called:
Prism….confirm from net
It is more di? Cult to measure the coe? Cient of volume expansion of a liquid than that of a solid because?
The containing evessel aslo xpands….confirm form net
The product of resistance and capacitance is called
Time….confirm from net
The potential difference between the ends of a conductor is 12 V. How much electrical energy is converted to other forms of energy in the conductor when 100C of charge flows through it?
1200….confirm form net
When we accelerate the charge, which types of waves are produced?
Electromagnetic waves
Due to relative motion of observer and the frames of reference of events, time always:
statics itself
The allowed energy states of atoms or molecules can be described by a set of _______.
Quantum numbers……confirm
Probability values are assigned on a scale of
0 to 1….confirm
The magnitude of the momentum of a particle can never exceed:
E/c, where E is its total energy
The ratio of the size of image to the size of object.
Angular magnification
When white light passes through a prism, it splits into _____ colors.
7…….confirm from net
A thermometer indicates 98.6?C. it may be:
IN a cup of hot tea
Tesla is a unit of
Magnetic flux
A light entering into glass prism from air does not give change in its:
Frequency
The total energy in an LC circuit is 5.0 x 10- 6 J. If L = 25mH the maximum current is:
20mA
Electromagnetic waves do not transport:
Charge
A heat of transformation of a substance is:
The energy per unit mass absorbed as heat during a phase transformation
Which of the following is true of all virtual images?
None of these
2dSin0=mA is called
bragg equation
No lens is perfect because ___________.
They suffer from aberration
A basic postulate of Einstein’s theory of relativity is
The laws of physics must be the same of obersvers moving with uniform velocity relative to each other.
Evidence that a gas consists mostly of empty space is the fact that
Heating a gas increases the molecular motion
The number of turns becomes double, but length remain same, then magnetic field in the solenoid become.
Double
Which of the following electromagnetic radiations has photons with the greatest energy?
X rays
When two objects come to common temperature, the body is said to be in:
Thermal equilibirium….confirm from net
If electric and gravitational force on an electron in a uniform electric field balance each other, then the intensity of electric field will be:
Mg/q
Electromagnetic waves do not transport:
Charge
During a slow adiabatic expansion of a gas
No energy enters or leaves as heat
A free electron and a free proton have the same kinetic energy. This means that, compared to the matter wave associated with the proton, the matter wave associated with the electron has.
A longer wavelength and the same frequency
The quantity delta(V)/delta(r) is called
Potential gradient
If two objects are in thermal equilibrium with each other.
They cannot be at different temperatures
A consequence of Einstein’s theory of relatively is:
Moving clocks run more slowly than when they are at rest
In order that a signal process is both isothermal and isobaric
A change of phase is essential
The specific heat of a substance is:
The amount of heat energy per unit mass to rales the temperature of the substance by 1?C
The electron states that constitute a single shell for an atom all have:
The same value of n
An isothermal process for an ideal gas is represented on a p-V diagram by:
A portion of a hyperbola
The concept of an electric field lines is introduced by:
Faraday
The current in a car headlamp is 2.0A. The headlamp is switched on for 30 minutes. How much charge passes through the headlamp?
360 C
In some movies, you sometimes see an actor looking in a mirror and you can see his face in the mirror. During the filming of this scene, what does the actor see in the mirror?
The movie camera
The pauli exculusion principle is obeyed by:
All particles with spin quantum numbers of ½
The focal length of convex lens is:
Positive
An electron (m=9.11 * 10-31kg) has a speed of 0.95C. its kinetic energy is;
1.8*10-31J
An electron (m=9.11 x 10-31kg) has a speed of 4.0.95C. Its kinetic energy is:
1.8x10-13J
An electron (m=9.11 x 10-31kg) has a momentum of 4.0x10-22kg*m/s. Its kinetic energy:
6.3*10-14J
Force on a charged particle is zero when projected at angle with the magnetic field
0 degree
Heat is:
Energy transferred by virtue of a temperature di?erence
When a charge is projected perpendicular to a uniform magnetic field, its path is:
Circular
If potential difference across two plates of a capacitor is doubled, then energy stored in it will be:
Four times
In case of metallic conductors, the charge carriers are.
Electrons
Room temperature is about 20 to 22 degrees on the:
Celcius scale
Room temperature is about 68 to 72 degrees on the
Fahreheit scale
As compared to distance measured by an observer on Earth, the distance from earth star measured by an observer in a moving spaceship would seem:
Same
Evidence that a gas consists mostly of empty space is the fact that
The density of a gas becomes much greater when it is liquefied….confrim
For an electron, the rest mass energy is:
0.511 MeV………confirm from net
Antiparticle of electron is:
Position
According to the first law of thermodynamics, applied to a gas, the increase in the internal energy during any process
Equals the heat input plus the work done on the gas….confirm from net
The approach to personality stresses that people possess a basic goodness, and have a natural tendency to grow to higher levels of functioning is.
humanistic….confirm from net
In a photoelectric experiment at a frequency above cut off, the stopping potential is proportional to :
The energy of the most energetic electron after it is ejected….confirm from net
There is a temperature at which the reading on the kelvin scale is numerically:
Equal to that on the Celsius scale
When you stand in front of a plane mirror, your image is:
Virtual, erect and the same size as you
When a ray of light travels from a lesser denser medium to denser medium then _______.
It bends towards the normal
Entropy measure the:
Energy of a system
The theoretical uppr limit for the frequency of electromagnetic waves is:
There is no upper limit
The special theory of relativity is applicable to the object moving with maximum velocity equal to:
Speed of light
According to the special theory of relativity:
All forms of energy have mass-like properties
In constructing a thermometer it is necessary to use a substance that:
Undergoes some change when heated or cooled
A particle with rest mass m moves with speed 0.6c. its kinetic energy is:
0.25 mC2
J.J Thompson’s measurement of e/m for electrons provides evidence of the:
Particle nature of matter
Polarization means __________.
To alter the wavelength of the light
Emission of electron by metals on heating is called
Thermonic emission
The specific heat of a substance is:
the amount of heat energy per unit mass to raise the temperature of the substance by 1?C
An erect object is in front of a convex mirror a distance greater than the focal length. The image is:
Virtual, erect, and smaller than the object…..cconfirm from net
The apperarance of colors in thin film is due to:
Interface…..confirm from net
A student rubs a rod held in his hand. Which action causes the rod to gain a large electrostatic charge?
Rubbing a polythene rod with a woolen duster
Two parallel straight wires carrying current in same direction
Attract each other
One tesla is equal to
N/Am…..confirm from net
The process for which entropy remains constant is:
A reversible process
The appearance of colors in thin film is due to:
interference
Greenhouse gases absorb ______ radiation
Infrared
The theoretical uppr limit for the frequency of electromagnetic waves is:
There is no upper limit
Heat has the same units as:
Work
Capacitance of a capacitor in vaccum is given by:
A eo /d
AN electron in a K shell of an atom has the principal quantum number:
N =1
When an electromagnetic waves meets a reflecting surface, the direction taken by the reflected wave is dertermined by:
The angle of incidence
Capacitive reactance Xc is
1/2(pi)fc
Bending of light around the edges of an obstacle called:
Diffraction
In RL series circuit phase angle is given by:
Tan-1(wl/R)
Interface of light is evidence that:
Light is a wave phenomenon
In a photoelectric e? ect experiment at a frequency above cut o? the number of electrons ejected is proportional to:
The number of photons that hit the sample…..confirm from net
In a photoelectric e? ect ecperiment the stopping potential is:
The electric potential that causes the electron current to vanish…confirm from net
In an adiabatic process:
The work done by the environment on the system equals the change in internal energy….confirm from net
A free electron and a free proton have the same kinetic energy . This means that, compared to the matter wave associated with the proton, the matter wave associated with the electron has:
A longer wavelength and the same frequency…confirm from net
Polarization experiments provide evidence that light is:
A transverse wave….confirm from net
If light of low wavelength is used in young’s double slit experiment, then width of the fringe will:
Decreases….confirm from net
Lenz’s law is in accordance with law of conservation of
Energy….confirm from net
AN LC series circuit with an inductance L and a capacitance C has an oscillation frequency f. Two inductors, each with inductance L, and two capacitors, each with capacitance C, are all wired in series and the circuit is completed. The oscillation frequency is:
F
The known laws of electromagnetism before James Clerk Maxwell were following EXCEPT:
Faraday’s Law
A particle having 2e charge falls through a potential difference of 5V energy acquired by it is.
10eV
According to relatively theory a particle of mass m with a momentum of 2mc has a speed of:
c/2
If the kinetic energy of a free particle is much less than its rest energy then its kinetic energy is proportional to:
The square of the magnitude of its momentum
The two metallic strips that constitute some thermostats must di? Er in:
Coefficient of linear expansion
Phase difference between V and I of an AC through resistor is:
0 degree
Average value of current and voltage over complete cycle is:
zero
A detector is used to detect the speed of a particular wave. If the frequency of an electromagnetic signal is 400 MHz, the speed detected by detector is _______.
300000 km/s
Inductive reactance XL of an inductor is:
2Ï€ f L…..confirm from net
An inductor may store energy in its:
Magnetic field….confirm from net
If velocity of a conductor moving through a magnetic field B is made zero then motional emf is:
-vBL
Question # 1 of 10 ( Start time: 12:23:05 PM ) Total Marks: 1
The image produced by a convex mirror of an erect object in front of the mirror is always: Select correct option:
Virtual, erect, and larger than the object
Virtual, erect, and smaller than the object (Correct)
Real, erect, and larger than the object
Real, erect, and smaller than the object
Question # 2 of 10 ( Start time: 12:24:39 PM ) Total Marks: 1
In some movies, you sometimes see an actor looking in a mirror and you can see his face in the mirror. During the filming of this scene, what does the actor see in the mirror? Select correct option:
His face
Your face
The movie camera (Correct)
The director's face
Question # 3 of 10 ( Start time: 12:26:09 PM ) Total Marks: 1
A femtometer is:
Select correct option:
10-9 m
10-12 m
10-15 m (Correct)
10-18 m
Question # 4 of 10 ( Start time: 12:27:27 PM ) Total Marks: 1
The "strength" of a lens is measured in _________.
Select correct option:
Meters
Diopters
Lense meter (Correct)
Provatans
Question # 5 of 10 ( Start time: 12:28:52 PM ) Total Marks: 1
In constructing a thermometer it is NECESSARY to use a substance that:
Select correct option:
Expands linearly with rising temperature
Will not freeze
Will not boil
Undergoes some change when heated or cooled (Correct)
Question # 6 of 10 ( Start time: 12:30:12 PM ) Total Marks: 1
When an object (iron/tungsten) is heated, it emits light. It emits infrared (IR) light when it is heated at a temperature __________. Select correct option:
Below 800 degree C (Correct)
Between 800 degree C to 1600 degree C
Between 1600 degree C to 2500 degree C
above 2500 degree C
Question # 7 of 10 ( Start time: 12:31:45 PM ) Total Marks: 1
The reason there are two slits, rather than one, in a Young’s experiment is:
Select correct option:
to create a path length difference
to increase the intensity
one slit is for frequency, the other for wavelength
one slit is for Electric fields , the other is for Magnetic fields (Correct)
Question # 8 of 10 ( Start time: 12:33:16 PM ) Total Marks: 1
An electron is moving at 0.6c.If we calculate its kinetic energy using (1/2) mv2, we get a result that is:
Select correct option:
Just right
Just half enough
Twice the correct value
About 28% too low (Correct)
Question # 9 of 10 ( Start time: 12:34:47 PM ) Total Marks: 1
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 (Correct)
Question # 10 of 10 ( Start time: 12:36:14 PM ) Total Marks: 1
The theoretical upper limit for the frequency of electromagnetic waves is:
Select correct option:
just slightly greater than that of red light
just slightly less than that of blue light
the greatest x-ray frequency
there is no upper limit (Correct)
1. Velocity is defined as:
A. rate of change of position with time
B. position divided by time
C. rate of change of acceleration with time
D. a speeding up or slowing down
E. change of position
2. Acceleration is defined as:
A. rate of change of position with time
B. speed divided by time
C. rate of change of velocity with time
D. a speeding up or slowing down
E. change of velocity
3. Which of the following is a scalar quantity?
A. Speed
B. Velocity
C. Displacement
D. Acceleration
E. None of these
► J·C
If you appreciate our work, please share our website vuonlinehelp.blogspot.com with your friends.
We are here to provide Latest Virtual University Assignment Solutions, GDB Solutions, Quiz Solution, Midterm Past Papers, and Final term Past Papers in this website.
Thanks everone