
Fisika kls XI(2)
Authored by Lidia Srifajar
Physics
University

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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Seberkas sinar datang dengan sudut datang 40 derajat dari air ke udara. Besarnya sudut bias sinar adalah... ( n air =4/3,n udara= 1).. Derjat
39,8
58,9
45,3
61,3
65
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Bila sudut batas sinar di dalam suatu medium adalah 45 derajat maka indeks bias medium terhadap udara adalah.. ( n udara =1)
1,2
1,3
1,4
1,5
1,6
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Bila cepat rambat cahaya di udara adalah 3 x 10 pangkat 8 m/s maka cepat rambat cahaya dalam medium yg mempunyai indeks bias 1,5 adalah.. m/s
2 x 10 pangkat 8
2,5 x 10 pangkat 8
3 x 10 pangkat 8
3,5 x 10 pangkat 8
4 x 10 pangkat 8
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Suatu gelombang dengan panjang gelombang 2 m menjalar dengan laju 6 m/s meninggalkan medium A dan masuk melewati medium B sehingga panjang gelombang ya menjadi 3 m. Laju gelombang dalam medium B adalah.. m/s
12
9
6
5
2,5
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Seberkas cahaya masuk dalam kaca plan paralel mempunyai ketebalan 10 cm dengan sudut datang 60 derjat dan diabiaskan dengan sudut 30 derjat. Besarnya pergeseran sinar keluar terhadap sinar masuk adalah.. cm
2,5
3
4,25
5,75
6
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