Uy » Choraklik online testlar » Fizika choraklik » 7-sinf Fizika 4-chorak Fizika choraklik 7-sinf Fizika 4-chorak InfoMaster Aprel 26, 2021 1044 Ko'rishlar 0 SaqlashSaqlanganOlib tashlandi 1 0 Tomonidan yaratilgan InfoMaster 7-sinf Fizika 4-chorak Testni Vafaqulov Alisher tayyorladi. 1 / 25 Soatning 30 mm uzunlikdagi minut mili uchi 10 minutda 31,4 mm uzunlikdagi yo’lni bosib o’tdi. Minut mili uchining chiziqli tezligini toping A) 0,00005 m/s B) 0,0005 m/s C) 0,5 m/s D) 0,005 m/s 2 / 25 Aylanma tekis harakatga chiziqli tezlik va burchakli tezlik bog’lanish formulasini ko’rsating A) υ=2pR/T B) ω=2p υ C) υ=ωR D) ω=2p/T 3 / 25 Soatning minut mili aylanishining chastotasini toping.(Hz) A) 1/3600 B) 1/100 C) 1/7200 D) 100 4 / 25 Burchakli ko’chishning vaqtga nisbati qanday fizik kattalik? A) tezlanish B) chastota C) davr D) burchakli tezlik 5 / 25 Soatning 30 mm uzunlikdagi minut uchi 10 minutda 31,4 mm uzunlikdagi yo’lni bosib o’tdi. Minut mili uchining burchak tezligini toping. A) 0,017 rad/s B) 0,0017 rad/s C) 1,7 rad/s D) 0,17 rad/s 6 / 25 Aylanma tekis harakatdagi chiziqli tezlik formulasini ko’rsating. 1) V=2¶R/T, 2) V=wR, 3)V=2¶RV A) 1 B) 2 C) 3 D) 1,2,3 7 / 25 Faqat butun olam tortishish kuchlari ta’sirida erkin harakat qilayotgan xar qanday jism ......... xolatida bo’ladi A) vaznsizlik B) o’ta yuklanish C) turg’unmas muvozanat D) turg’un muvozanat 8 / 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) 1 km/s B) 9,8 km/s C) 11,2 km/s D) 7,9 km/s 9 / 25 Jismning yerga tortilish kuchi …… deb ataladi A) bosim kuchi B) reaksiya kuchi C) og’irlik kuchi D) jism og’irligi 10 / 25 Gravitatsion doimiy xalqaro birliklar sistemasida qanday birlik bilan aniqlanadi A) N*kg B) kg*m/S² C) m³/kg*s² D) N/m² 11 / 25 Yer sirtidagi h=2R balandlikda erkin tushish tezlanishi nimaga teng A) g/9 B) g C) g/2 D) g/4 12 / 25 Erkin tushish tezlanishi jismning yer sirtidan balandligiga bog’likligi qaysi formulada ko’rsatilgan A) g/m² B) g=GM/(R+h)² C) f/m D) m/s² 13 / 25 Oyda erkin tushish tezlanishi nimaga teng? (m/s2) A) 1,6 B) 1 C) 7,9 D) 9,8 14 / 25 Agar jism biror balandlikdan ikki baravar katta tezlik bilan gorizantal otilsa, uning uchish uzoqligi qanday o’zgaradi A) 2 marta kamayadi B) o’zgarmaydi C) 2 marta ortadi D) 4 martta ortadi 15 / 25 Yer uchun birinchi kosmik tezlik qiymatini ko’rsating A) 7,9 km/s B) 11,2 km/s C) 7,9 m/s D) 16,7 km/s 16 / 25 Odam liftda turibdi. Odamga ta’sir qiluvchi kuchlar: mg – og’irlik kuchi, N – tayanch reaksiya kuchi, Lift yuqoriga xarakatlana boshlaganda kuchlar orasidagi munosabatni ko’rsating. 1) mg > N 2) mg < N 3) mg = N 4) mg = 0; N = 0 A) 4 B) 2 C) 1 D) 3 17 / 25 Odam liftda turibdi. Odamga ta’sir qiluvchi kuchlar: mg – og’irlik kuchi, N – tayanch reaksiya kuchi, Lift pastda to’xtashdan oldin sekinlashganda kuchlar orasidagi munosabatni ko’rsating. Lift pastda to’xtashdan oldin sekinlashyapti 1) mg > N 2) mg < N 3) mg = N 4) mg = 0; N = 0 A) 2 B) 4 C) 3 D) 1 18 / 25 1000 mN necha N? A) 400 B) 10 C) 70 D) 1 19 / 25 Massasi 60 kg bo’lgan jism tik yuqoriga 1 m /s2 tezlanish bilan ko’tarilayotgan bo’lsa, uning og’irligi qanday bo’ladi? A) 540 N B) 600 N C) 660 N D) 480 N 20 / 25 Jism tekis tezlanuvchan harakat boshlab, 3-sekundda 5 m yo’l o’tdi. U harakatning boshlang’ich 3 sekundida qanday yo’l o’tadi (m) ? A) 13 B) 9 C) 11 D) 7 21 / 25 25 m/s tezlik bilan yuqoriga tik otilgan jismning 2 s dan keyingi tezligi qancha bo’ladi? A) 10 m/s B) 5 m/s C) 20 m/s D) 15 m/s 22 / 25 Boshlang’ich tezliksiz erkin tushayotgan jism 3-sekund ichida qanday masofani o’tadi? g = 10 m/s2 A) 10 m/s B) 25 m/s C) 15 m/s D) 5 m/s 23 / 25 Erkin tushib harakat qilayotgan jismning tezligi har sekundda qanchaga o’zgaradi A) 15 m/s B) 10 m/s C) o’zgarmaydi D) 5 m/s 24 / 25 Jism harakat tenglamasi x=5+3t–t2 formula bilan berilgan. Jismning boshlang’ich koordinatasi nimaga teng? A) 9 m B) 3 m C) 5 m D) 1 m 25 / 25 Jismning harakat tenglamasi x = 2 – 3 t + 2 t2 formula bilan berilgan. Bu harakat uchun tezlik tenglamasini yozing A) υ = 4 t B) υ= - 3 + 4 t C) υ= 4 - 3 t D) υ= 4 + 3 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