WorksheetsQuantum Physics
Total questions: 10
Worksheet time: 5mins
The SI unit of frequency is the __________.
meter
second
hertz
meter per second
Which subatomic particle is negatively charged?
proton
neutron
electron
quark
True or False? The wavelength and frequency of all waves are inversely proportional to each other.
True
False
What's the name of the infamous experiment in Quantum Physics?
Double-Split Experiment
One-Slit Experiment
Double-Decker Experiment
Double-Slit Experiment
Photoelectrons will be ejected from a material surface if?
The threshold frequency is greater than the photon frequency
The work function is less than the photon energy
The intensity of light is high enough
The wavelength of photon is maximum
A monochromatic light beam with a quantum energy of 9.0 eV is incident upon a photocell. The work function of the photocell is 4.1 eV. What is the maximum kinetic energy of the electron.
4.2 eV
4.4 eV
4.7 eV
4.9 eV
In an experiment, photoelectric effect is observed in metal A when light with frequency (f ) falls on the metal. If the light frequency used in this experiment is doubled, the photoelectrons
Will not be ejected
Will be ejected as observed in the previous
Will be ejected with greater number of photoelectrons
Will be ejected with greater kinetic energy
Wave -particle duality is supported by...
electrons behaving as particles with ordinary matter
electrons behaving as waves when travelling through space
the photo electric effect
all of the above
the minimum frequency for which the photoelectric effect can occur is called the
absolute frequency
cut off frequency
Lyman frequency
threshold frequency
