

RADIASI BENDA HITAM
Flashcard
•
Physics
•
3rd Grade
•
Practice Problem
•
Hard
nur fatimah
FREE Resource
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10 questions
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1.
FLASHCARD QUESTION
Front
Energi yang dipancarkan oleh benda hitam sempurna dengan luas permukaan 100 cm2 dan suhu 1000 K setiap 1 sekon adalah ....
Back
567 J
2.
FLASHCARD QUESTION
Front
Perbandingan jumlah energi radiasi kalor yang dipancarkan tiap sekon satu satuan luas permukaan dari dua benda hitam sempurna masing-masing bersuhu 367oC dan 47oC adalah ....
Back
16 : 1
3.
FLASHCARD QUESTION
Front
Sebuah benda hitam sempurna berupa bola dengan jari-jari 1 cm bersuhu 500 K. Besarnya daya yang terpancar dari benda, jika diketahui tetapan Stefan Boltzman 5,67 x 10-8 W/m2K4 adalah ....
Back
4,451 watt
4.
FLASHCARD QUESTION
Front
Bola logam dipanaskan pada suhu 227oC memancarkan radiasi dengan intensitas 2500 W/m2. Koefisien emisivitas bola logam tersebut adalah .... (tetapan Stefan Boltzman 5,67 x 10-8 W/m2K4 )
Back
0,705
5.
FLASHCARD QUESTION
Front
Sebuah benda suhunya 27oC. Jika konstanta Wien = 3,0 x 10-3 m.K. Panjang gelombang radiasi benda tersebut yang membawa energi terbanyak adalah ....
Back
1,0 x 10-5 m
6.
FLASHCARD QUESTION
Front
Sebuah filamen lampu pijar pada suhu T Kelvin meradiasikan gelombang dengan = 6000 Å. Jika filamen mengalami penurunan suhu 0,6 T maka panjang gelombang radiasinya menjadi ....
Back
10.000 Å
7.
FLASHCARD QUESTION
Front
Lampu pijar 200 Watt, 220 Volt pada saat dinyalakan 6,6 % energinya berubah menjadi energi foton dengan frekuensi 5 x 1014 Hz. Banyaknya foton yang dipancarkan pada frekuensi tersebut setiap sekon adalah .... (tetapan planck 6,6 x 10-34 J.s )
Back
4,0 x 1019 J
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