PHYSICS FIZIK KSSM F5: CHAPTER 7.1

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

The wavelengths, λ of the violet light and the yellow-orange light are 404.7 nm and 578.2 nm respectively. What is the energy quantum, E for the violet light and the yellow-orange light?

Panjang gelombang, λ bagi warna ungu ialah 404.7 nm dan warna kuning jingga ialah 578.2 nm.

Berapakah kuantum tenaga, E masing-masing bagi warna ungu dan kuning jingga?

• Ungu: 6.99 eV

  Kuning-jingga: 4.89 eV

• Ungu: 4.89 eV

  Kuning-jingga: 6.99 eV

• Ungu: 3.07 eV

  Kuning-jingga: 2.15 eV

• Ungu: 2.15 eV

  Kuning-jingga: 3.07 eV

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

A 60 W lamp emits red light with a wavelength, l = 7.0 × 10^–7 m. What is the number of photons emitted per second?

Sebuah lampu 60 W memancarkan cahaya merah dengan panjang gelombang, l = 7.0 × 10^–7 m. Berapakah bilangan foton yang dipancarkan per saat?

• 1.90 x 10³⁷s^-1

• 4.74 x 10^-21s^-1

• 1.90 x 10^-37s^-1

• 4.74 x 10²¹s^-1

"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