SOAL OMI FISIKA 2025
Quiz
•
Physics
•
9th - 12th Grade
•
Hard
MA AQIDAH
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25 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Sebuah elektron dilepaskan dari keadaan diam di antara dua pelat sejajar berjarak 2 cm dengan beda potensial 200 V. Besar kecepatan elektron saat mencapai pelat positif adalah …
(massa elektron = 9,11×10⁻³¹ kg, muatan elektron = 1,6×10⁻¹⁹ C)
8,4×10⁶ m/s
2,1×10⁶ m/s
4,2×10⁶ m/s
1,8×10⁷ m/s
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Seekor burung kolibri mengepakkan sayapnya 60 kali per detik. Panjang sayapnya 12 cm. Berapakah percepatan linear ujung sayapnya jika dianggap bergerak melingkar penuh?
1710 m/s²
6840 m/s²
3420 m/s²
855 m/s²
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Sebuah mikroskop memiliki objektif f₁ = 0,5 cm dan okuler f₂ = 5 cm. Jarak antara lensa = 20,5 cm. Perbesaran total adalah …
200
150
100
250
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Gas O₂ bermassa 32 gram berada pada suhu 300 K dan tekanan 1 atm. Tentukan energi kinetik rata-rata per molekul gas.
6,21×10⁻²¹ J
4,14×10⁻²¹ J
3,12×10⁻²¹ J
8,28×10⁻²¹ J
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Sebuah bintang berada 4,3 tahun cahaya dari Bumi. Jika teleskop mengamati ledakan bintang, kejadian itu sebenarnya telah terjadi …
4,3 tahun lalu
8,6 tahun lalu
2,15 tahun lalu
1 tahun lalu
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Seutas kawat memiliki panjang 2 m, luas penampang 1 mm², dan terbuat dari tembaga (ρ = 1,7×10⁻⁸ Ωm). Hitung hambatannya.
0,034 Ω
0,017 Ω
0,002 Ω
0,68 Ω
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Bunyi sirine ambulans terdengar 500 Hz oleh pengamat diam. Jika ambulans bergerak mendekati pengamat dengan kecepatan 20 m/s dan kecepatan bunyi 340 m/s, frekuensi sumber adalah …
470 Hz
471 Hz
471,5 Hz
472 Hz
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