Page 10 - Modul A+ Fizik Tg 5_Pan Asia Publications

3. Sinar gelombang dengan panjang gelombang, λ Penyelesaian/ Solution
ditujukan ke atas permukaan logam seperti di bawah. Tenaga foton/ Photon Energy V,
Light with wavelength, λ incident on the metal surface in the hc
diagram below. KBAT Menilai E = —–
λ
8
(6.63 × 10 × 3 × 10 )
-34
Cahaya = —————————–
Light (468 × 10 )
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Elektron
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Electron = 4.3 × 10 J = 2.7 eV
Tenaga foton/ Photon Energy T,
hc
E = —–
Logam λ
Metal (6.63 × 10 × 3 × 10 )
©PAN ASIA PUBLICATIONS
8
-34
= —————————–
(750 × 10 )
–9
Logam/ Metal M N R = 2.7 × 10 J = 1.7 eV
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Fungsi kerja/ Work function (eV) 2.2 0.4 1.9
Tenaga foton V, dapat membebaskan elektron dari
Cahaya monokromatik V T permukaan logam M,N dan R kerana tenaga foton >
Monochromatic light fungsi kerja. Tenaga foton T, dapat membebaskan
λ (nm) 468 750 elektron dari permukaan logam N sahaja tetapi tidak
Antara kombinasi berikut, yang manakah kesan dari logam M dan R kerana tenaga foton < fungsi kerja.
Photon energy V, can release electrons from metal surfaces
fotoelektrik dapat diperhatikan? M, N and R due to photon energy > work function. The
Which of the following combinations of photoelectric effects photon energy of T, can release electrons from the surface
can be observed? of metal N only but not from the metals M and R due to the
[1 eV = 1.6 × 10 J] photon energy < work function.
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Soalan Berformat SPM

Kertas/Paper 1

1. Rajah 1 menunjukkan potret seorang ahli fizik. 2. Ahli fizik X telah menggabungkan teori Albert Einstein
Diagram 1 shows the potrait of a physicist. dan Max Planck dengan teori atom Rutherford.
Siapakah ahli fizik X?
Physicist X combines the theories of Albert Einstein and Max
Planck with Rutherford’s atomic theory. Who is the physicist
Format SPM Terbaharu
X?
A Thomas Young C John Dalton
B Louis de Broglie D Niels Bohr

3. Pilih padanan yang betul mengenai ahli fizik berikut
dengan teori masing-masing?
Choose the correct match about the following physicists and
their theories?
Rajah/Diagram 1
Ahli fizik Teori
Siapakah nama ahli fizik di atas? Physicist Theory
What is the name of the physicist above?
A Thomas Young A Isaac Newton Penemuan elektron
B Max Planck Discovery of electron
C John Dalton B J.J. Thomson Cahaya terdiri daripada zarah
D J. J. Thomson Light consist of particles
C Thomas Idea kuanta tenaga
Young Idea of quantum of energy
D Louis de Sifat kedualan gelombang-zarah
Broglie Wave-particle duality properties

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