What the cutoff wavelength is for the experiment

Reference no: EM13338666

Energy and momentum of electromagnetic waves/photons.

(a) In a photoelectric experiment, light with a wavelength of 250 nm hits a certain material. When a negative potential of 0.48 volt is applied there is no more current while a saturation current Is is recorded at positive voltages. From this information (1) nd what the material is made of and (2) deduce what the cuto wavelength is for this experiment. Also, (3) what will the stopping potential be if the wavelength is changed to 200 nm? Finally, (4) what would the saturated current be if the intensity of the light was doubled for the 250 nm case?

(b) An electron initially nearly at rest is hit with an x-ray. The scattered radiation is at a 45 from the

incident direction. The scattered radiation has a wavelength of 0.01 nm. From this information, (1)find the wavelength of the incident radiation and (2) find the energy given o to the scattered electron, in eV. Finally (3) find the minimum potential drop, in volts, that had to be used to accelerate the electrons from rest to produce the incident x-ray. What is the ratio of the resulting energy of the accelerated electrons to the energy given o to the electron in the scattering of the x-ray (using eV for the energies involved would be a good idea).

Reference no: EM13338666

Questions Cloud

Historical cost or fair value accounting treatment : An interesting research paper on fair value accounting of PP&E under IFRS which allows either historical cost or fair value accounting treatment.

Two-dimensional word puzzle : Write a python function called find_words that finds and prints the list of valid words in a two-dimensional word puzzle

How many bits must the mar register have : Assume you have 512MB of main memory. How many bits must the MAR register have? Show your work.

How to go about designing and applying the filter : If you needed to eliminate some noise from some seismic data and you want to use a bandpass filter to do so, how would you go about designing and applying the filter

What the cutoff wavelength is for the experiment : In a photoelectric experiment, light with a wavelength of 250 nm hits a certain material. When a negative potential of 0.48 volt is applied there is no more current while a saturation current Is is recorded at positive voltages.

How far from the aperture should examination take place : Nearly plane waves of C02 laser light of wavelength l = 10.6 m emerge from a circular aperture 10 cm in diameter. If the C02 laser light is to be examined on a target in the far field

Evaluate the following boolean expression : Assume that a=5, b=2, and c= 3. What problems do you encounter when attempting to evaluate the following Boolean expression?

Cost benefit analysis of the sarbanes-oxley act : Prepare a 5-page cost/benefit analysis of the Sarbanes-Oxley Act

How long would it take for the box to rise in potential : Consider a black box which is approximately a 10-cm cube with two binding posts. Each of these terminals is connected by a wire to some external circuits. Otherwise, the box is well insulated from everything.

User Account

All Pages