Soalan Objektif Teori Fotoelektrik Einstein
Quiz
•
Physics
•
11th Grade
•
Hard
NAJIHAH Moe
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10 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Berapakah frekuensi bagi suatu foton untuk memancarkan elektron daripada permukaan logam Zink dengan tenaga kinetik 5.73 eV?
[Fungsi kerja bagi zink , W = 4.47 eV]
1.05×1015Hz
1.25×1015Hz
1.30×1015Hz
2.46×1015Hz
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Suatu sinar disinarkan ke atas permukaan logam litium yang mempunyai fungsi kerja 4.7×10−19 J . Jika tenaga kinetik maksimum elektron yang dipancarkan adalah 3×10−20 J , berapakah panjang gelombang sinar tersebut?
380 nm
398 nm
420 nm
550 nm
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Diberi fungsi kerja bagi logam aluminium adalah 6.88×10−19 J . Berapakah panjang gelombang ambang bagi logam aluminium?
2.89×10−7m
3.00×10−7m
4.20×10−7m
5.30×10−7m
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Berapakah panjang gelombang ambang bagi logam nikel yang mempunyai fungsi kerja, W = 5.15 eV?
2.10×10−7m
2.41×10−7m
2.55×10−7m
2.78×10−7m
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Berapakah halaju maksimum fotoelektron yang dipancarkan keluar apabila cahaya monokromatik berwarna biru ( λ = 4.80×10−9m) disinarkan ke atas permukaan logam Cesium yang mempunyai fungsi kerja 2.1 eV?
2.45×105ms−1
3.56×105ms−1
4.07×105ms−1
9.5×106ms−1
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Berapakah halaju maksimum fotoelektron yang dipancarkan keluar apabila sinar UV
( f =1.5×1015Hz) disinarkan ke atas permukaan logam besi yang mempunyai fungsi kerja 4.5 eV ?
6.75×105 ms-1
7.73×105 ms-1
8.21×105 ms-1
9.94×105 ms-1
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Berapakah halaju maksimum fotoelektron yang dipancarkan keluar apabila sinar dengan tenaga 1.213×10−18 J disinarkan ke atas permukaan logam platinum yang mempunyai fungsi kerja 6.35 eV?
6.57×105ms−1
7.75×105ms−1
7.84×105ms−1
8.21×105ms−1
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