Worksheetsphysics form 5 chapter 7
Total questions: 22
Worksheet time: 11mins
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De Broglie equation
relates the momentum of a mass to its wavelength
relates the energy of a mass to its wavelength
relates the frequency of a mass to its wavelength
relates the work function of a mass to its wavelength
The SI unit of frequency is the __________.
meter
second
hertz
meter per second
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
Which of the following colors of visible light has the highest frequency?
Blue
Green
Orange
Red
Violet
Which of the following colors of visible light has the longest wavelength?
Blue
Green
Yellow
Red
Violet
the minimum frequency for which the photoelectric effect can occur is called the
absolute frequency
cut off frequency
Lyman frequency
threshold frequency
When light of specific frequencies is shined on a surface, electrons are ejected from the surface. This is the idea behind...
Quantization of Energy
Photoelectric Effect
Compton Effect
deBroglie Waves
Uncertainty Principle
In an electron microscope , light source is replaced by the beam of very fast moving __________.
neutron
proton
electron
photon
A _______ is an idealised body that is able to absorb all electromagnetic radiation that falls on it.
_______ merupakan suatu jasad unggul yang berupaya menyerap semua sinaran elektromagnet yang jatuh padanya.
Black body
Jasad hitam
White body
Jasad putih
Planck’s body
Jasad Planck
Radiator body
Jasad pemancar
A black body can emit thermal radiation depending on its _______.
Jasad hitam juga dapat memancarkan sinaran termal bergantung pada _______.
Pressure
Tekanan
Volume
Isipadu
Temperature
Suhu
Light intensity
Keamatan cahaya
A particle is said to have wave-particle duality when that particle exhibits the properties of both _______ and _______
Suatu zarah dikatakan bersifat kedualan gelombang-zarah apabila zarah tersebut menunjukkan kedua-dua sifat _______ dan _______
Wave, Atom
Gelombang, Atom
Wave, Light
Gelombang, Cahaya
Electron, Particle
Elektron, Zarah
Wave, Particle
Gelombang, Zarah
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