1.
If light with a frequency below the cutoff frequency for a certain metal hits that metal:
Question 1 options:
electrons will be ejected after the intensity of the light reaches a certain value |
|
no electrons will be ejected |
|
electrons will be ejected, but will fall back to the metal |
|
the light will be re-radiated by the metal |
|
I don't know. |
2.
One electron-volt is equivalent to
Question 2 options:
1 J |
|
1 V |
|
1.6 x 10^-19 J |
|
1.6 x 10^-19 V |
|
1 million N/C |
3)
Considering two-slit interference, the locations where bright spots are found on the screen are due to
Question 1 options:
Destructive interference. |
|
Constructive interference. |
|
Dispersion. |
|
Diffraction. |
|
None of the above. |
4) If light with a wavelength of 550 nm is incident on a pair of slits separated by 0.05 mm, what is the angle to the first off-center bright spot?
5)
Huygens' principle states that
Question 3 options:
Monocromatic light incident upon two slits will form an interference pattern. |
|
Monocromatic light incident upon a single small slit will form an interference pattern. |
|
Each point on a wave crest can be modeled as a point source for wavelets. |
|
The optical resolution of the eye is limited. |
|
None of the above. |
6)
In a two-slit interference pattern, the pattern becomes fainter as we move away from the central maximum due to
Question 4 options:
Interference |
|
Diffraction |
|
Resolution |
|
The Rayleigh criterion |
|
I don't know. |
7)
7) Unpolarized light is incident upon a polarizer whose axis is tilted 30 degrees relative to vertical. What fraction of the light is transmitted through the polarizer?
8) What is the de Broglie wavelength of a beam of electrons having kinetic energy K = 100 eV
9)
The electron volt is a unit of
Question 2 options:
momentum. |
|
voltage. |
|
energy. |
|
charge. |
|
None of the above. |
10) If a beam of monoenergetic electrons with an energy of 78 eV are incident upon a crystal spacing (slit size) of 0.215 nm, what is the smallest angle for which we will see constructive interference?
11)
The potential energy associated with a Simple Harmonic Oscillator is given by
Question 4 options:
a square wave. |
|
a step-function. |
|
a parabola. |
|
a hyperbola. |
|
I don't know. |
12) If the ground-state energy of a particle-in-a-box system is 11.8 eV, what is the energy of the n=2 level?
1. If light with a frequency below the cutoff frequency for a certain metal hits that...
Question 1 (1 point) If light with a frequency below the cutoff frequency for a certain metal hits that metal: Question 1 options: electrons will be ejected after the intensity of the light reaches a certain value no electrons will be ejected electrons will be ejected, but will fall back to the metal the light will be re-radiated by the metal I don't know. Question 2 (1 point) One electron-volt is equivalent to Question 2 options: 1 J 1 V...
A coherent beam of 1.937 eV photons is incident on a double slit. A screen is L = 1.8 m away from the source and the width of each slit is a = .010 mm. This creates an interference/diffraction pattern such that the second interference maxima is y2 = 46 mm from the center line. If we wanted to duplicate this interference/diffraction pattern with monoenergetic electrons of mass me = 9*10-31 kg, what would the kinetic energy of one of...
just letter suffice . all 4 qs photon with a frequency of 2.5 x 1015 Hz strikes the surface of a metal. If the can be stopped by a voltage of 3.0 v, the work function of the metal is 41) An Ultraviolet electrons that are ejected be a. 5.3 eV and the photon has an energy o b. 8.2 eV and the photon has an energy of 1.3 x 10s Joules c. 5.3 eV and the photon has an...
2. (3 points) When light with wavelength of 221 nm is incident on a certain metal surface, electrons are ejected with maximum kinetic energy of 3.28 x 1019). a) What is the binding energy (the work function)? Express your answer in ev. b) Find the wavelength of light necessary to double the maximum kinetic energy of the electrons ejected from the metal.
Question 11 10 pts In a single slit diffraction experiment the wavelength of electrons passing through the slit is found to be 3.88x10-10 m. What is the energy of the electrons in eV? Cannot be determined unless the velocity is given 3.200 eV 11 Kev 38 eV 10 eV 10 pts Question 12 What is the thinnest film of a 1.40 refractive index coating on a glass (N = 1.50) for which destructive interference of the violet component (400 nm)...
*Question 246: Interference/Diffraction Two Slits A two slit Fraunhoffer diffraction-interference pattern is observed with light of wavelength 700 nm. The slits have a width a = 0.01 mm and a separation d = 0.2 mm. How many bright fringes will be seen in the central diffraction maximum? Select one a. 38 b. 19 ec. 20 d. 3 e. 39
4. Light of wavelength 580nm is incident on 2 identical parallel slits separated by distance (between centers) of 0.53 mm. (i) If the slits are narrow (infinitely thin), what are the angular positions (0) of the first order (m- 1) and second order (m-2), "two slit interference" maxima? (ii) If the slits are no longer considered infinitely thin, but have width 0.32 mm, what is the intensity at each of the angular positions obtained in part (i)? You should express...
Sodium metal has a work function of 2.28 eV. (a) At what wavelength of incident light will electrons be ejected from the material? (b) If light of wavelength 450 nm is incident on the sodium, determine the maximum kinetic energy of the ejected electrons 13.4
Matter Waves - Double Slit Interference Previously we learned the wave behaviors of light - the single-slit diffraction, and the double-slit interference. In this problem, you will explore the wave behaviors of matter (particles). Double Slit Screen Interference y=Ltane 0 L bright fringes: sine Dark fringes above central sin 8 = (m m-0, 11, 12(constructive) (destructive). Matter Waves - Double Slit electrons Max Men Max photons Electrons pass through a double slit separated by d = 0.0100 um, 1um =...
2. When light with a wavelength of 223 nm is incident on a certain metal surface, electrons are ejected with a maximum kinetic energy of 3.30 × 10 − 19 J. Determine the wavelength of light that should be used to double the maximum kinetic energy of the electrons ejected from this surface.