Uy » Choraklik online testlar » Fizika choraklik » 7-sinf Fizika 4-chorak Fizika choraklik 7-sinf Fizika 4-chorak InfoMaster Aprel 26, 2021 1104 Ko'rishlar 0 SaqlashSaqlanganOlib tashlandi 1 1 Tomonidan yaratilgan InfoMaster 7-sinf Fizika 4-chorak Testni Vafaqulov Alisher tayyorladi. 1 / 25 Erkin tushish tezlanishi jismning yer sirtidan balandligiga bog’likligi qaysi formulada ko’rsatilgan A) g/m² B) m/s² C) g=GM/(R+h)² D) f/m 2 / 25 Gravitatsion doimiy xalqaro birliklar sistemasida qanday birlik bilan aniqlanadi A) N*kg B) m³/kg*s² C) kg*m/S² D) N/m² 3 / 25 Oyning yer atrofida harakatlanish tezligini toping. Yer massasi 6*10 24 kg, yer bilan oy orasidagi masofa 400 000 km gravitatsion doimiylik Nm2/kg2 A) 7,9 km/s B) 9,8 km/s C) 11,2 km/s D) 1 km/s 4 / 25 Yerga tortilishi tufayli jismning tayanchga yoki osmaga tasr etadigan kuchi .......... deb ataladi A) bosim kuchi B) reaksiya kuchi C) og’irlik kuchi D) jism og’irligi 5 / 25 Xalqaro birliklar sistemasida kuch birligi A) kg*m / s² B) kg / s² C) kg*m²/s² D) m / s² 6 / 25 Motosikl botiq ko’prik ustida tekis harakatlanmoqda. Ko’prikning eng quyi nuqtasiga yetganida unga qo’yilgan kuchlarning teng ta’sir etuvchisi qanday yo’nalgan bo’ladi? A) Yuqoriga B) Oldinga C) Orqaga D) Pastga 7 / 25 60 N kuch jismga 0,6 m/s2 tezlanish beradi. Qanday kuch bu jismga 2 m/s2 tezlanish beradi? A) 250 N B) 200 N C) 150 N D) 180 N 8 / 25 Nyutonning 3 qonuni formulasi qaysi ifodada to’g’ri ko’rsatilgan? A) F = mv²/ R B) F = mg C) F1 =- F2 D) F = - k x 9 / 25 1 m/s2 tezlanish bilan tushayotgan liftdagi 20 kg massali bolaning og’irligi qancha? A) 180 N B) 200 N C) 170 N D) 190 N 10 / 25 Odam liftda turibdi. Odamga ta’sir qiluvchi kuchlar: mg – og’irlik kuchi, N – tayanch reaksiya kuchi, Lift yuqorida to’xtashdan oldin sekinlashganda kuchlar orasidagi munosabatni ko’rsating. Lift yuqorida to’xtashdan oldin sekinlashyapti 1) mg > N 2) mg < N 3) mg = N 4) mg = 0; N = 0 A) 1 B) 4 C) 3 D) 2 11 / 25 1000 mN necha N? A) 70 B) 1 C) 400 D) 10 12 / 25 Boshlang’ich tezliksiz erkin tushayotgan jism birinchi sekunda qanday masofani o’tadi?g = 10 m/s2 A) 5 m B) 5,5 m C) 50 m D) 0,5 m 13 / 25 Jismning harakat tenglamasi x = 2 – 3 t + 2 t2 formula bilan berilgan. Bu harakat uchun tezlik tenglamasini yozing A) υ= 4 - 3 t B) υ= 4 + 3 t C) υ = 4 t D) υ= - 3 + 4 t 14 / 25 Erkin tushayotgan jism ikkinchi sekundda qanday masofani (m) o’tadi? A) 5 B) 35 C) 15 D) 25 15 / 25 Tezligi υ=5-3 t (m/s) tenglama bilan berilgan jismning boshlangich tezligi (m/s) nimaga teng? A) 3 B) 5 C) 2 D) 4 16 / 25 Tekis sekinlanuvchan harakatda tezlik va tezlanish ishoralarining munosabatini ko’rsating. 1) υ0 > 0, a<0 2) υ0 = 0, a<0 3) υ0 < 0, a>0 4) υ >0, a>0 A) 2,3 B) 1,3 C) 4 D) 3,4 17 / 25 Jism harakat tenglamasi x=5+3t–t2 formula bilan berilgan. Jismning boshlang’ich koordinatasi nimaga teng? A) 3 m B) 1 m C) 5 m D) 9 m 18 / 25 Tezlanishning o’lchov birligini ko’rsating A) s/ m² B) m/s C) m²/s D) m/s² 19 / 25 Erkin tushib harakat qilayotgan jismning tezligi har sekundda qanchaga o’zgaradi A) 5 m/s B) o’zgarmaydi C) 10 m/s D) 15 m/s 20 / 25 Avtomabil 90 km/soat tezlik bilan tekis harakatlanmoqda. Agar avtomobil g’ildiragining raidusi 35 sm bo’lsa, g’ildirak markazidan shuncha masofa uzoqlikdagi nuqtasining markaziga intilma tezlanishini toping. (m/s2) A) 50 B) 2000 C) 2800 D) 1786 21 / 25 Agar moddiy nuqta aylana bo’ylab teng vaqtlar orasida teng yollarni bosib o’tsa, bunday harakat ....... harakat deyiladi A) notekis B) aylanma o’zgaruvchan C) tekis aylanma tezlik D) tekis 22 / 25 Burchakli ko’chishning vaqtga nisbati qanday fizik kattalik? A) davr B) burchakli tezlik C) chastota D) tezlanish 23 / 25 Uzunligi 25 sm bo’lgan ipga bog’langan sharcha 5 m/s chiziqli tezlik bilan aylanmoqda. Sharning markaziga intilma tezlanishini toping. (m/s2) A) 1 B) 10 C) 100 D) 2 24 / 25 Soatning minut mili aylanishining chastotasini toping.(Hz) A) 1/7200 B) 1/3600 C) 100 D) 1/100 25 / 25 Aylanish davri bilan chiziqli tezligi orasidagi munosabat formulasini toping. A) V=S/t B) V=at C) V=wR D) V=2¶R/T 0% Testni qayta ishga tushiring Baholash mezoni 86%-100% 5 baho 71%-85% 4 baho 56%-70% 3 baho 55% va kamiga 2 baho Fikr-mulohaza yuboring Author: InfoMaster Foydali bo'lsa mamnunmiz