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WorksheetsQUANTUM THEORY OF LIGHT KSSM F5
Total questions: 20
Worksheet time: 1hrs 10mins
Which of the following electromagnetic waves has the highest frequency?
Gamma rays
UV rays
Visible light
Radio waves
Which of the following electromagnetics waves has the longest wavelength?
Gamma rays
UV rays
Microwaves
Radio waves
What is the range of wavelength for the visible light?
400 - 750 cm
400 - 750 mm
400 - 750 nm
400 - 750 km
A black body is ............................
an idealised body that is able to reflect all electromagnetic radiation that falls on it.
an idealised body that is able to absorb all electromagnetic radiation that falls on it.
an idealised body that is able to refract all electromagnetic radiation that falls on it.
an idealised body that is able to diffract all electromagnetic radiation that falls on it.
All scientists below proposed classical theory of light except...
Isaac Newton
Thomas Young
Albert Einstein
J.J. Thomson
All scientists below proposed quantum theory of light except...
Max Planck
John Dalton
Louis de Broglie
Niels Bohr
Calculate the energy of a 750 nm light photons.
Given: E = hf, c = fƛ, h = 6.63 × 10–34 Js, c = 3.00 × 108 ms–1
1.65 × 10–19 J
2.65 × 10–19 J
3.65 × 10–19 J
4.65 × 10–19 J
A 50 W lamp emits red light with a wavelength,
ƛ = 7.0 × 10–7m. What is the number of photons emitted per second?
Given:
P = nhc/ƛ , h = 6.63 × 10–34 Js, c = 3.00 × 108 m s–1
1.76 × 1020 s–1
2.76 × 1020 s–1
3.76 × 1020 s–1
4.76 × 1020 s–1
A red laser pen emits light with a wavelength of 670 nm. If the number of photons emitted is 3.37 × 1018 per second, what is the output power of the laser pen?
Given:
P = nhc/ƛ , h = 6.63 × 10–34 Js, c = 3.00 × 108 m s–1
1.00 W
2.00 W
3.00 W
4.00 W
Select all that apply. A blackbody
absorbs radiation
emits radiation
reflects radiation
generates radiation
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
_______ is a discrete energy packet and not a continuous energy.
_______ ialah paket tenaga yang diskrit dan bukan tenaga selanjar.
Quantum theory
Teori Quantum
Quantum of energy
Kuantum tenaga
Photon
Foton
Wave-Particle Duality
Kedualan Gelombang-Zarah
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
What is the relationship between the momentum of a particle and wavelength?
Apakah hubungan diantara momentum zarah dan panjang gelombang?
Linearly increase
Meningkat secara linear
Constant
Malar
Directly proportional
Berkadar terus
Inversely proportional
Berkadar songsang
"object emitting electromagnetic radiation which is determined by its temperature"
"objek yang memancarkan sinaran elektromagnet mengikut suhunya"
This is definition for
Ini adalah definisi bagi
black body
Jasad hitam
black body radiator
Pemancar jasad hitam
thermal radiation
sinaran termal
quantum wave
gelombang kuantum
What classical theory stated regrading this curve?
Apakah yang dinyatakan oleh teori klasik berkaitan lengkungan ini?
the higher the light's intensity, the higher the energy of the light.
Semakin tinggi keamatan cahaya, semakin tinggi tenaga cahaya itu
the higher the light's intensity, the lower the energy of the light.
Semakin tinggi keamatan cahaya, semakin rendah tenaga cahaya itu
the lower the light's intensity, the higher the energy of the light.
Semakin rendah keamatan cahaya, semakin tinggi tenaga cahaya
Which part of this graph against classical theory?
Bahahian graf yang manakah yang bertentangan dengan teori klasik?
left side of the graph
bahagian kiri graf
right side of the graph
bahagian kanan graf
at the peak of the graph
pada puncak graf
Radiation and matter that has the properties of both particle and wave is called
confusion
mixing
entanglement
wave-particle duality
Choose the correct statement for photon
Photon is a quantum of electromagnetic wave
Photon is a particle with a positive charge
Photon is a particle with a negative charge
Photon is the electron produced when light is incident on a metal's surface
