10-11-sinf test fizika
1. Yer suniy yo`ldoshi quyidagi tezliklarning qaysi biriga ega bo`lishi mumkin?
1) 11,2 km/s. 2) 16,7 km/s. 3) 7,9 km/s. 4) 6,3 km/s 5) 5,7 km/s
2. Vertolyot gorizontal ravishda 40 km uchib, 900 burchak ostida burildi va yana 30 km uchdi. Vertolyot uchgan yo‘lni va ko‘chishini toping (km).
.A) 70;50 B) 50;70 C) 7;50 D) 70;5
3. .Rasmda ko’rsatilgandek jism aylana bo'ylab soat strelkasi bo’ylab harakatkabnoqda. Bunday harakatda markazga intilma tezlanish qaysi tomonga yo’nalgan?
A) 1 B) 2 . C)3 D)4
4. Aylana bo‘ylab tekis harakat qilayotgan jism radiusi 2 marta oshirilsa, markazdan qochma kuch qanday o‘zgaradi?
A) 2 marta ortadi .B) 2 marta kamayadi C) 4 marta ortadi D) 4 marta kamayadi
5.Konkichi stadionda yarimaylana 75m radiusda yugurib chiqdi.Uning bosib o`tgan yo`li va ko`chishni aniqlang.
А. 235 m; 75m В. 471 m.; 150 m C. 235 m.; 150 m D. 150мm; 471m
6.G`ildirak 100 rad/s burchak tezlik bilan aylanmoqda. 20 s davomida u necha marta aylanadi?
6283 B) 2000 C) 1200 D) 1000
7. Jism 5 m radiusli aylana bo`ylab 20 π m/s tezlik bilan harakatlansa uni aylanish chastotasi qanday?
A) 2 B) 2π C) 2π² D) 0,5
8. Radiusi 20 sm bo`lgan g`ildirakning o`qi 3 m/s chiziqli tezlik bilan harakatlanadi. G`ildirakning burchak tezligini toping. (1/rad)
A) 1,5 B) 0,15 C) 15 D) 6
9. Burilish burchagi qanday birlik bilan o’lchanadi ?
A) Radian (rad) B) Metr (m) C) Sekund (sek) D) Millimetr (mm)
10. Berilganlardan butun olam tortishish qonunini ifodalovchi formulani toping.
A) B) C) D)
11.
Vazinsizlik holatida qanday soatdan foydalansa bo’ladi
A) prujinali soat B) mayatnikli soat
C) qum soat D) barcha soat ishlanmaydi
12. Jism bir nuqtaga 900 burchak ostda 4N va 7N kuch tasr etmoqda bu kuchlarning teng tasr etuvchisini toping. (N) A)11 B)3 C)5.5 D)8.1
13. Massalari 2 kg va 6 kg bo‘lgan 2 ta noelastik jism bir-biriga qarab 2 m/s tezlik bilan harakatlanmoqda, bu jismlarning to‘qnashuvidan keyingi tezligining modulini toping.
A. 2 m/s. B. 4 m/s. C. 0,5 m/s. D. 1 m/s. E. 0.
14. Massasi 2000 t bo’lgan poezd tezligini 36 km/soatdan 72km/soatga oshirdi. Uning impuls o’zgarishini toping.(kg*m/s)
A) 2.104 B) 2.105 C) 2.106 D) 2.107
15. 36 km/h tezlik bilan harakatlanayotgan 50 t massali tankning impulsi qanday (kg.m/s)?
150000 B) 200000 C) 250000 D) 500000
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