Mekanika Kuantum

Quiz
•
Physics
•
12th Grade
•
Hard
chelline vw
FREE Resource
5 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kalium disinari dengan cahaya ultraviolet yang panjang gelombangnya 2500 Å. Jika fungsi kerja kalium 2,21 eV, berapakah energi kinetik maksimum elektron-elektron yang dipancarkan?
2,85 eV
2, 70 eV
2,75 eV
2,95 eV
2,55 eV
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Energi kinetik fotoelektron (photoelectron) berkisar dari nol hingga 4,0 x 10^-19 J bila cahaya dengan panjang gelombang 3000 A jatuh pada sebuah permukaan. Berapakah potensial hest cahaya ini?
2,5 eV
2,8 eV
3 eV
1,5 eV
2,3 eV
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Sebuah keping logam yang mempunyai energi ambang 2 ev disinari dengan cahaya monokromatis dengan panjang gelombang 6000 Å hingga elektron meninggalkan permukaan logam. Jika h = 6,6 x 10^-34 Js dan kecepatan cahaya 3 x 10⁸ m/detik, maka energi kinetik elektron yang lepas….
0,1 x 10^-19 Joule
0,16 x 10^-19 Joule
1,6 x 10^-19 Joule
3,2 x 10^-19 Joule
19,8 x 10^-19 Joule
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hitunglah persentase perubahan panjang gelombang sebuah sinar-X dengan panjang gelombang 0,400 Å yang mengalami hamburan Compton 90° dari sebuah elektron!
0,6080 Å
0,0608 Å
0,0860 Å
0,0806 Å
0,8060 Å
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Tentukan panjang gelombang de Broglie sebuah butiran 0,01 kg yang memiliki kecepatan 10 m/det!
2,70 x 10^-23 Å
4,85 x 10^-23 Å
8,53 x 10^-23 Å
9,90 x 10^-23 Å
6,63 x 10^-23 Å
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