Homework Answers
5)
a) According to classical wave theory of light, Intensity is directly proportional to the Energy of light. Higher the Intensity, higher is the energy and hence, more will be the Kinetic energy. Thus, the relation between Intensity I and Kinetic Energy KE will be,
Here, 
is the Intensity needed to just eject the electron and A is the
surface Area. Thus, the graph will be-
b) According to the Particle theory of light, Intensity represents no. of photons falling per second. Here, Kinetic Energy is independent of Intensity.
The second graph agrees with the experimental data because light indeed behaves as particles.
Add Answer to:
5. a) Sketch a graph of the kinetic energy of liberated photoelectrons as a function of...
6. a) Sketch a graph of the kinetic energy of liberated photoelectrons as a function of...
6. a) Sketch a graph of the kinetic energy of liberated photoelectrons as a function of the frequency of the incoming light according to the wave theory of light. KE b) Sketch a graph of the kinetic energy of liberated photoelectrons as a function of the frequency of the incoming light according to the particle theory of light. KE A f Which graph agrees with experimental data?
(9 pts) An unknown material A with фА gives out photoelectrons with kinetic energy EA1 when...
(9 pts) An unknown material A with фА gives out photoelectrons with kinetic energy EA1 when exposed to electromagnetic radiation with frequency vi a) What is the frequency (v2) of the electromagnetic radiation that would result in photoelectrons with the same kinetic energy from a material B with фв (and фв-2/3 x фа) Write V2 in terms of ф,and V1 b) What is the kinetic energy of the electrons (EB1) emitted from materials B, if exposed to electromagnetic radiation v1....
studying for my final, help velengths of light, all able to eject photoelectrons, shine ond is...
studying for my final, help
velengths of light, all able to eject photoelectrons, shine ond is independent of the intensity of the 1) (1 pt] In an experiment different wavelengths of light, all able to eject pm on a freshly on a freshly prepared (oxide-free) zinc surface. Which statement is truer a. The number of photoelectrons emitted per second is independent of me light for all the different wavelengths b. The number of photoelectrons emitted per second is directly proportional...
The photoelectric effect demonstrates the quantized nature of light. a) What is the kinetic energy and...
The photoelectric effect demonstrates the quantized nature of light. a) What is the kinetic energy and speed of an electron ejected from a Na surface with work function 2.28 eV when illuminated by light of wavelength i) 410 nm ii) 600 nm? b) What is the critical frequency fo of incident light below which no electrons are ejected? c) Sketch a graph of kinetic energy of the ejected electron vs. frequency of incident light for the photoelectric effect in sodium....
(b) For any wavelength of light that can eject electrons, the kinetic energy of the elecit fg the...
(b) For any wavelength of light that can eject electrons, the kinetic energy of the elecit fg the same in dim light or in bright light. What is the effect of increasing (i.e., making it brighter) with a wavelength that can eject an clectron? What is the effect of increasing the intensity of light with a wavelength below the threshold frequency? the intensity of light The kine increase if we in sease thentcnstg we he kinetic en-clay will be the...
all please if possible 38. Find the radius of curvature of a concave mirror produce an i image at 12 em, putting an object at 6 cm? 39. Calculate the maximum kinetic energy of photoelectrons eject...
all please if possible
38. Find the radius of curvature of a concave mirror produce an i image at 12 em, putting an object at 6 cm? 39. Calculate the maximum kinetic energy of photoelectrons ejected from a surface of work. function 2.46 eV, when illuminated with light of wavelength 350 nm. of radioactive material of decay constant ()equals to 293 sec1 40. Calculate the half-life (Tin)
38. Find the radius of curvature of a concave mirror produce an i...
1. For a ball falling straight down, sketch a graph of kinetic energy vs. time, and...
1. For a ball falling straight down, sketch a graph of kinetic energy vs. time, and a graph of potential energy vs. time. Assume that zero potential energy is at the floor. 2. Sketch a graph of the total energy vs. time for the ball. 3. What is Hooke’s law? What measurements would you make so you could construct a graph that would allow you to use Hooke’s law to find the spring constant. 4. In terms of force, when...
Questiond 9,11 and 12. how would you aplroach these X9 Identify the phenomena that suggest EMR must...
Questiond 9,11 and 12. how would you aplroach
these
X9 Identify the phenomena that suggest EMR must be treated as a particle. photoelectric effect, Compton Effect, diffraction b. interference, photoelectric effect, diffraction c. photoelectric effect, Compton Effect diffraction, interference, refraction d. 10. Zinc has a work function of 40 eV and is used in a photoelectric cell with light of an energy of 19 eV per photon. Determine the maximum kinetic energy of photoelectrons leaving the cell a. 11 eV 6...
Please show steps and show equations used 5. The cut-off (threshold) wavelength for the photoelectric effect...
Please show steps and show equations used
5. The cut-off (threshold) wavelength for the photoelectric effect for silver is 325 nm. (a) (4 pts) Find the maximum speed of electrons ejected from a silver surface by ultraviolet light of wavelength 250 nm. (b) (2 pts) What would happen if the intensity of light at wavelength 250 nm were increased? (o) 2 pts) If the silver surface were illuminated by a light of wavelength 500 nm, what would happen? Explain (d)...
5. Solar panels have become a source of “Green” power. Those that directly convert sunlight into...
5. Solar panels have become a source of “Green” power. Those that directly convert sunlight into electricity are called photo-voltaic cells and use the photo-electric effect to generate their electricity. a. Classical wave theory stated that by increasing the intensity (amount) of light, that each electron would have more kinetic energy, however experiments showed that increasing the intensity increased the number of electrons released, but not the amount of energy each electron had. Why is this so? b. A photon...
6. a) Sketch a graph of the kinetic energy of liberated photoelectrons as a function of the frequency of the incoming light according to the wave theory of light. KE b) Sketch a graph of the kinetic energy of liberated photoelectrons as a function of the frequency of the incoming light according to the particle theory of light. KE A f Which graph agrees with experimental data?
(9 pts) An unknown material A with фА gives out photoelectrons with kinetic energy EA1 when exposed to electromagnetic radiation with frequency vi a) What is the frequency (v2) of the electromagnetic radiation that would result in photoelectrons with the same kinetic energy from a material B with фв (and фв-2/3 x фа) Write V2 in terms of ф,and V1 b) What is the kinetic energy of the electrons (EB1) emitted from materials B, if exposed to electromagnetic radiation v1....
studying for my final, help
velengths of light, all able to eject photoelectrons, shine ond is independent of the intensity of the 1) (1 pt] In an experiment different wavelengths of light, all able to eject pm on a freshly on a freshly prepared (oxide-free) zinc surface. Which statement is truer a. The number of photoelectrons emitted per second is independent of me light for all the different wavelengths b. The number of photoelectrons emitted per second is directly proportional...
(b) For any wavelength of light that can eject electrons, the kinetic energy of the elecit fg the same in dim light or in bright light. What is the effect of increasing (i.e., making it brighter) with a wavelength that can eject an clectron? What is the effect of increasing the intensity of light with a wavelength below the threshold frequency? the intensity of light The kine increase if we in sease thentcnstg we he kinetic en-clay will be the...
all please if possible
38. Find the radius of curvature of a concave mirror produce an i image at 12 em, putting an object at 6 cm? 39. Calculate the maximum kinetic energy of photoelectrons ejected from a surface of work. function 2.46 eV, when illuminated with light of wavelength 350 nm. of radioactive material of decay constant ()equals to 293 sec1 40. Calculate the half-life (Tin)
38. Find the radius of curvature of a concave mirror produce an i...
Questiond 9,11 and 12. how would you aplroach
these
X9 Identify the phenomena that suggest EMR must be treated as a particle. photoelectric effect, Compton Effect, diffraction b. interference, photoelectric effect, diffraction c. photoelectric effect, Compton Effect diffraction, interference, refraction d. 10. Zinc has a work function of 40 eV and is used in a photoelectric cell with light of an energy of 19 eV per photon. Determine the maximum kinetic energy of photoelectrons leaving the cell a. 11 eV 6...
Please show steps and show equations used
5. The cut-off (threshold) wavelength for the photoelectric effect for silver is 325 nm. (a) (4 pts) Find the maximum speed of electrons ejected from a silver surface by ultraviolet light of wavelength 250 nm. (b) (2 pts) What would happen if the intensity of light at wavelength 250 nm were increased? (o) 2 pts) If the silver surface were illuminated by a light of wavelength 500 nm, what would happen? Explain (d)...
5. Solar panels have become a source of “Green” power. Those that directly convert sunlight into electricity are called photo-voltaic cells and use the photo-electric effect to generate their electricity. a. Classical wave theory stated that by increasing the intensity (amount) of light, that each electron would have more kinetic energy, however experiments showed that increasing the intensity increased the number of electrons released, but not the amount of energy each electron had. Why is this so? b. A photon...
Most questions answered within 3 hours.
-
Create a 32-run crossed array design with six control factors
and two noise factors such that...
asked 35 minutes ago -
A 500g sample of sand from source A has the following amounts
retained on each sieve....
asked 37 minutes ago -
In
your own words, please explain the essay by John Keynes wrote "The
End of Laissez...
asked 36 minutes ago -
How are the matrix and pixels related? Why are smaller
pixels better for diagnostic quality?
asked 38 minutes ago -
2. An AC generator has 80 rectangular loops on
its armature. Each loop is 11 cm...
asked 40 minutes ago -
Please help me with this question. Consider Aldi’s current and
potential geographic markets (see Exhibit 4...
asked 43 minutes ago -
What are the main components of the fermentation process and
give an explanation of each? Include...
asked 1 hour ago -
Explain which types of cells in the body (belonging to which
organs, etc.) are sensitive to...
asked 1 hour ago -
A single cable supports an 703-kg elevator car. What is the
tension in the cable when...
asked 1 hour ago -
among the three different ways to link CSS specifications to an
HTML document (inline CSS, document...
asked 1 hour ago -
(1) Write the net ionic equation for the reaction that occurs
when equal volumes of 0.191...
asked 1 hour ago -
On the night of April 18, 1775, a signal was to be sent from the
Old...
asked 1 hour ago