In a photoelectric experiment using a sodium surface, you find a stopping potential of 1.86 V...
In a photoelectric experiment using a sodium surface, you find a
stopping potential of 1.86 V for a wavelength of 300 nm and a
stopping potential of 0.838 V for a wavelength of 399 nm. From
these data find (a) a value for the Planck
constant, (b) the work function Φ for sodium, and
(c) the cutoff wavelength λ0 for
sodium.
Homework Answers
Add Answer to:
In a photoelectric experiment using a sodium surface, you find a
stopping potential of 1.86 V...
in a photoelectric experiment it is found that a stopping potential of 1.00 v is needed...
in a photoelectric experiment it is found that a stopping potential of 1.00 v is needed to stop all the electrons when incident light of wavelength 294 nm is used and 2.7 V is needed for light of wavelength 207 nm. from these data determine plank's constant and the work function of thr metal.
Photoelectric Effect: Problem 4 Previous Problem Problem List Next Problem Results for this submission Answer Prevlew 6.646 correct 6.646 0.49999 0.49999 2537.93 2537.93 At least one of the answe...
Photoelectric Effect: Problem 4 Previous Problem Problem List Next Problem Results for this submission Answer Prevlew 6.646 correct 6.646 0.49999 0.49999 2537.93 2537.93 At least one of the answers above is NOT correct. (1 poing in a photoelectric experiment using a Lithium surface, you find a stopping potential of 0.72 V tor a wavelength 'of 343 nm and a stopping potential of 2.91 V for a wavelength of 214 nm. Because this is an experiment, your value of From these...
(1 point) A Silver surface (work function = 4.26 eV) is illuminated with 270 nm light...
(1 point) A Silver surface (work function = 4.26 eV) is illuminated with 270 nm light from a 3 mW laser. How many photons per second are emitted by the laser? 4.0909E15 photons/s Only a small fraction of these photons can interact with electrons at the surface. Suppose this fractional efficiency is 0.00031%. What is the current in the detector assuming all the emitted electrons are captured? пA Note that current is charge(in Coulombs) per second. The charge of one...
6. Photoelectric effect. You perform a photoelectric experiment on an unknown material and get the following...
6. Photoelectric effect. You perform a photoelectric experiment on an unknown material and get the following data: Stopping potential (V) 0.4 Frequency (THz) 560 700 780 830 1010 1210 1.3 1.7 2.4 From this data, and using Excel or an equivalent data tool, find a. the work function (in eV). b. the cutoff (threshold) wavelength for this material, c. the slope, d, an estimate of h e. What is your percent error in your h calculation? Include the Excel graph...
Two light sources are used in a photoelectric experiment to determine the work function for a...
Two light sources are used in a photoelectric experiment to determine the work function for a particular metal surface. When green light from a mercury lamp (A 546.1 nm) is used, a stopping potential of 0.802 V reduces the photocurrent to zero. (a) Based on this measurement, what is the work function for this metal? eV (b) What stopping potential would be observed when using light from a red lamp (A 686.0 nm)? V
Two light sources are used in a photoelectric experiment to determine the work function for a...
Two light sources are used in a photoelectric experiment to determine the work function for a particular metal surface. When green light from a mercury lamp (λ = 546.1 nm) is used, a stopping potential of 0.914 V reduces the photocurrent to zero. (a) Based on this measurement, what is the work function for this metal? eV (b) What stopping potential would be observed when using light from a red lamp (λ = 663.0 nm)? V
Two light sources are used in a photoelectric experiment to determine the work function for a...
Two light sources are used in a photoelectric experiment to determine the work function for a particular metal surface. When green light from a mercury lamp (λ = 546.1 nm) is used, a stopping potential of 0.898 V reduces the photocurrent to zero. (a) Based on this measurement, what is the work function for this metal? eV (b) What stopping potential would be observed when using light from a red lamp (λ = 640.0 nm)? V
just need help on part b. Thanks Sodium has a work function of 2.46 eV (a)...
just need help on part b. Thanks
Sodium has a work function of 2.46 eV (a) Find the cutoff wavelength and cutoff frequency for the photoelectric effect wavelength 504.1 frequency 5.951E14Hz nm (b) What is the stopping potential if the incident light has a wavelength of 164 nm? 7.6 Your response differs from the correct answer by more than 10%. Double check your calculations. V
Two light sources are used in a photoelectric experiment to determine the work function for a...
Two light sources are used in a photoelectric experiment to determine the work function for a particular metal surface. When green light from a mercury lamp (λ = 546.1 nm) is used, a stopping potential of 0.810 V reduces the photocurrent to zero. (a) Based on this measurement, what is the work function for this metal? ___eV (b) What stopping potential would be observed when using light from a red lamp (λ = 675.0 nm)? ___V
Two light sources are used in a photoelectric experiment to determine the work function for a...
Two light sources are used in a photoelectric experiment to determine the work function for a particular metal surface. When green light from a mercury lamp (λ = 546.1 nm) is used, a stopping potential of 0.934 V reduces the photocurrent to zero. (a) Based on this measurement, what is the work function for this metal? ____ eV (b) What stopping potential would be observed when using light from a red lamp (λ = 656.0 nm)? ____V
Photoelectric Effect: Problem 4 Previous Problem Problem List Next Problem Results for this submission Answer Prevlew 6.646 correct 6.646 0.49999 0.49999 2537.93 2537.93 At least one of the answers above is NOT correct. (1 poing in a photoelectric experiment using a Lithium surface, you find a stopping potential of 0.72 V tor a wavelength 'of 343 nm and a stopping potential of 2.91 V for a wavelength of 214 nm. Because this is an experiment, your value of From these...
(1 point) A Silver surface (work function = 4.26 eV) is illuminated with 270 nm light from a 3 mW laser. How many photons per second are emitted by the laser? 4.0909E15 photons/s Only a small fraction of these photons can interact with electrons at the surface. Suppose this fractional efficiency is 0.00031%. What is the current in the detector assuming all the emitted electrons are captured? пA Note that current is charge(in Coulombs) per second. The charge of one...
6. Photoelectric effect. You perform a photoelectric experiment on an unknown material and get the following data: Stopping potential (V) 0.4 Frequency (THz) 560 700 780 830 1010 1210 1.3 1.7 2.4 From this data, and using Excel or an equivalent data tool, find a. the work function (in eV). b. the cutoff (threshold) wavelength for this material, c. the slope, d, an estimate of h e. What is your percent error in your h calculation? Include the Excel graph...
Two light sources are used in a photoelectric experiment to determine the work function for a particular metal surface. When green light from a mercury lamp (A 546.1 nm) is used, a stopping potential of 0.802 V reduces the photocurrent to zero. (a) Based on this measurement, what is the work function for this metal? eV (b) What stopping potential would be observed when using light from a red lamp (A 686.0 nm)? V
just need help on part b. Thanks
Sodium has a work function of 2.46 eV (a) Find the cutoff wavelength and cutoff frequency for the photoelectric effect wavelength 504.1 frequency 5.951E14Hz nm (b) What is the stopping potential if the incident light has a wavelength of 164 nm? 7.6 Your response differs from the correct answer by more than 10%. Double check your calculations. V
Most questions answered within 3 hours.
-
Two forces are acting on an object. Force 1 on the object is 6.0
N and...
asked 1 minute ago -
You are planning for retirement. You plan to work for 20 years.
Starting a year from...
asked 14 minutes ago -
The African Adventures exhibit water system holds approximately
850,000 gallons (3.2x109 g) of water. The temperature...
asked 6 minutes ago -
which of the following is capital?
the barn a farmer uses to hold the chickens he...
asked 16 minutes ago -
Attribute
Sample Value
Sample Value
Sample Value
Sample Value
pirate_num
11
22
43
54
pirate_lname
James...
asked 9 minutes ago -
10. Two forces act on a 3 kg object, the gravitational force and
a second, constant...
asked 26 minutes ago -
Dividing Partnership Net Loss
Leigh Meadows and Byron Leef formed a partnership in which the
partnership...
asked 23 minutes ago -
Discuss how Entrepreneurial leadership style differs
from traditional leadership?
asked 49 minutes ago -
A futuristic design for a car is to have a large solid
disk-shaped flywheel within the...
asked 47 minutes ago -
Solid NaOH is added to a solution of 0.50 M acetic acid until
the pH of...
asked 50 minutes ago -
Which of the following statements is not a characteristic of the
Internal Revenue Code?
A) The...
asked 58 minutes ago -
Say true or false and explain it.
A heap is represented using an array. The array...
asked 1 hour ago