Radiasi Benda Hitam
Quiz
•
Physics
•
12th Grade
•
Practice Problem
•
Medium
Darmawan Buchari
Used 20+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Permukaan benda pada suhu 37oC meradiasikan gelombang elektromagnetik . Bila nilai konstanta Wien = 2,898 x 10 −3 m.K, maka panjang gelombang maksimum radiasi permukaaan adalah....
A. 8,898 x 10−6 m
B. 9,348 x 10−6 m
C. 9,752 x 10−6 m
D. 10,222 x 10−6 m
E. 1,212 x 10−6 m
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Perhatikan diagram pergeseran Wien berikut ini!
Jika suhu benda dinaikkan, maka yang terjadi adalah …
A. Panjang gelombang tetap
B. Panjang gelombang bertambah
C. Panjang gelombang berkurang
D. Frekuensi tetap
E. frekuensi berkurang
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Suatu permukaan logam yang fungsi kerjanya 4 . 10-19 joule disinari cahaya yang panjang gelombangnya 3300 Ǻ. Tetapan Planck = 6,6 . 10-34 J.s dan cepat rambat cahaya = 3 . 108 m/s, energi kinetik maksimum elektron adalah...
A. 2,4 . 10-21 joule
B. 1,2 . 10-20 joule
C. 2,0 . 10-19 joule
D. 4,6 . 10-19 joule
E. 6. 10-18 joule
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Grafik di bawah ini menunjukkan hubungan antara energi kinetik maksimum elektron (Ek) terhadap frekuensi foton (f) pada efek fotolistrik. Jika konstanta Planck 6,6 × 10-34 J.s, danv1 eV = 1,6 × 10-19 J, maka besar f (dalam satuan Hz) adalah ....
48 × 1014
21 × 1014
14 × 1014
9,5 × 1014
8,9 × 1014
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Perhatikan pernyataan berikut:
1) Elektron dapat keluar dari logam saat permukaan logam disinari gelombang elektromagnetik.
2) Lepas tidaknya elektron dari logam ditentukan oleh frekuensi cahaya yang datang.
3) Fungsi kerja setiap logam selalu sama.
Pernyataan yang benar berkaitan dengan efek fotolistrik adalah...
A. 1, 2, dan 3
B. 1 dan 2
C. 1 dan 3
D. 1 saja
E. 3 saja
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Elektron bermassa 9,0 x 10−31 kilogram bergerak dengan kecepatan 2,2 x 107ms−1 (Tetapan Planck = 6,6 x 10−34 Js) memiliki panjang gelombang de Broglie sebesar.....
A. 3,3 x 10−11 m
B. 4,5 x 10−11 m
C. 5,2 x 10−11 m
D. 6,7 x 10−11 m
E. 8,0 x 10−11 m
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Keadaan dimana cahaya bisa mengeluarkan elektron dari beberapa permukaan logam adalah ....
radiasi benda hitam
efek fotolistrik
efek Compton
pergeseran wien
teori foton
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