Test Question Preview (ID: 25536)
Test.
TEACHERS: click here for quick copy question ID numbers.
A beam of light is directed onto a sheet of metal, but electrons are not ejected from the metal. Increasing which of the following could possibly cause the metal to begin to eject electrons?
a) Frequency
b) Wavelength
c) Intensity
d) Speed
As a photon strikes a piece of metal, the kinetic energy of an ejected electron is determined by -
a) the frequency of the absorbed photon.
b) the number of absorbed photons.
c) the path taken by the escaped electron.
d) the mass of the escaped electron.
The deBroglie wavelength theory equation....
a) Not even real
b) is used to calculate the energy of a Photon E = hf
c) E=mc^2
d) is used to calculate wavelength of matter, λ = h/p or λ = h/mv
In some situations, when a beam of light is directed at a metal surface, an electron is emitted. This happens because the photons in the light -
a) combine with metal atoms to create electrons, which escape
b) are transformed into electrons with enough energy to escape.
c) transfer their energy to an electron, helping the electron escape.
d) are destroyed on impact, generating electrons which escape.
Which of the following behaviors of light provides evidence for its wave nature?
a) Light will travel indefinitely in a straight line until it strikes an object.
b) Light striking a flat surface at an angle is reflected at the same angle.
c) Two beams of light that meet can create interference with each other.
d) The amount of energy in a beam of light can be measured and calculated.
A ___________________________ is a discrete unit (quantum) of light energy.
a) work
b) photon
c) Planck
d) wavelength
If radiation has a frequency of 3.0 X 10^15 Hz and it strikes a material, what is the energy of each incident photon (Planck’s constant is 6.6 X 10^-34)?
a) 1.98 x 10-18
b) 1.23 x 10^23
c) 5.6 x 10^6
d) 7.3 x 10^-7
If the frequency of light is 5.34 X 10^14 Hz, calculate the energy of the photon (Planck’s constant is 6.6 X 10^-34).
a) 3.56 x 10^-7
b) 1.23 x 10^23
c) 1.98 x 10^-18
d) 3.5244 x 10^-19
What is the Value of Planck's constant?
a) 6.67 x 10^-11 Js
b) 6.67 x 10^-19 Js
c) 1.6 x 10^-19 Js
d) 6.63 x 10^-34 Js
What is E = hf ?
a) Formula for frequency and the speed of light
b) Wavelength and frequency
c) Einsteins formula for the energy of a photon
d) De Broglie wavelength formula
Charge of an UP quark?
a) 1/3
b) -1/3
c) 2/3
d) -2/3
What distance is an angstrom?
a) 10^-5 m
b) 10^-10 m
c) 10^-15m
d) 10^-20 m
What distance is a femtometre?
a) 10^-5 m
b) 10^-10 m
c) 10^-15 m
d) 10^-20 m
What is the speed of light?
a) c = 3.00 x 10^18 m/s
b) c = 3.00 x 10^9 nm/s
c) c = 3.00 x 10^8 nm/s
d) c = 3.00 x 10^8 m/s
Whats the charge of a down Quark?
a) 1/3
b) 2/3
c) -1/3
d) -2/3
E =
a) hc
b) mp
c) fλ
d) hf
Physicist Thomas Young created the __________ to demonstrate the wave like properties of light.
a) Shadow Box Experiment
b) Cat in the Box Experiment
c) Double-Slit Experiment
d) Wave-Pool Experiment
What is the unit of measurement for Planck's constant
a) Joules
b) Joules per second
c) Joule seconds
d) Coulombs
What is the unit of measurement for Electromagnetic Charge?
a) Joules
b) Coulombs
c) Joule Seconds
d) Hz
What is an electron orbital?
a) The work function of a quark
b) The shape in which an electron perfectly orbits a nucleus
c) 3-D shapes defining 90% probability region where electrons may be at any given energy state
d) There's no such thing
Play Games with the Questions above at ReviewGameZone.com
To play games using the questions from above, visit ReviewGameZone.com and enter game ID number: 25536 in the upper right hand corner or click here.
To play games using the questions from above, visit ReviewGameZone.com and enter game ID number: 25536 in the upper right hand corner or click here.
TEACHERS / EDUCATORS
Log In | Sign Up / Register
Log In | Sign Up / Register