Uy » Choraklik online testlar » Fizika choraklik » 7-sinf Fizika 4-chorak Fizika choraklik 7-sinf Fizika 4-chorak InfoMaster Aprel 26, 2021 1021 Ko'rishlar 0 SaqlashSaqlanganOlib tashlandi 1 0 Tomonidan yaratilgan InfoMaster 7-sinf Fizika 4-chorak Testni Vafaqulov Alisher tayyorladi. 1 / 25 Avtomabil 200 m radiusli aylana yo’lda 72 km/soat tezlik bilan harakatlanadi. Uning markaziga intilma tezlanishi qancha m/s2 ga teng? A) 3 B) 5 C) 2 D) 4 2 / 25 Aylanma tekis harakatga chiziqli tezlik va burchakli tezlik bog’lanish formulasini ko’rsating A) ω=2p υ B) υ=ωR C) ω=2p/T D) υ=2pR/T 3 / 25 Burchakli ko’chishning vaqtga nisbati qanday fizik kattalik? A) tezlanish B) davr C) burchakli tezlik D) chastota 4 / 25 Aylanma tekis harakatda tezlanish qanday yo’nalgan? A) radius bo’ylab markazga B) urinma bo’ylab C) xar xil yo’nalgan bo’lishi mumkin D) radius bo’ylab markazdan 5 / 25 Soatning sekund mili burchakli tezligini toping. (rad/s) A) π/30 B) π/1800 C) π/10 D) π/2600 6 / 25 Velosiped g’ildiragining o’qidan eng uzoq nuqtasi 0,02 s davomida 20 km yo’lni bosib o’tdi. Velosipedning tezligini toping A) 36 km/soat B) 0,36 km/soat C) 3,6 km/soat D) 4 km/soat 7 / 25 Soatning vaqt mili burchakli tezligini toping. (rad/s) A) π/1800 B) π/2600 C) π/30 D) π/10 8 / 25 Aylanma tekis harakatda aylanish davri va chastotasi bog’lanishi formulasini ko’rsating A) T=t/N B) T=1/v C) t=T*N D) T=2¶R/V 9 / 25 Agar moddiy nuqta aylana bo’ylab teng vaqtlar orasida teng yollarni bosib o’tsa, bunday harakat ....... harakat deyiladi A) aylanma o’zgaruvchan B) notekis C) tekis D) tekis aylanma tezlik 10 / 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) 0,005 m/s B) 0,5 m/s C) 0,0005 m/s D) 0,00005 m/s 11 / 25 Tezligi υ=5-3 t (m/s) tenglama bilan berilgan jismning boshlangich tezligi (m/s) nimaga teng? A) 4 B) 2 C) 5 D) 3 12 / 25 Jism yerdan 35 m/s tezlik bilan tik yuqoriga otildi. U yerga necha sekunddan so’ng tushadi? A) 9 B) 3 C) 5 D) 7 13 / 25 Tekis tezlanuvchan harakatda tezlik va tezlanish ishoralarning munosabatini ko’rsating. 1) υ0 > 0, a>0 2) υ0 > 0, a<0 3) υ0 < 0, a<0 4) υ0<0, a>0 A) 2,4 B) 1,2 C) 1,3 D) 3,4 14 / 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 15 / 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) Pastga B) Yuqoriga C) Oldinga D) Orqaga 16 / 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) 480 N D) 660 N 17 / 25 Gorizontal tekislikda yotgan 6 kg massali jism qanday kuch ta’sirida 1s da 2 m/s tezlikka erishadi? Jismga ta’sir etayotgan ishqalanish kuchi 4 N ga teng deb xisoblang A) 12 B) 8 C) 4 D) 16 18 / 25 Massasi m = 10 kg bo’lgan jismga 25 N kuch ta’sir qilmoqda. Shu kuch ta’sirida u qanday tezlanish bilan harakat qiladi? A) 3 m / s² B) 2,5 m / s² C) 1 m / s² D) 6 m / s ² 19 / 25 Zambarakdan gorizantga burchak ostida uchib chiqqan snaryad 12 sekund uchgan. Snaryad ko’tarilgan eng yuqori balandlik qancha A) 10m B) 20m C) 180m D) 360m 20 / 25 Yer uchun uchunchi kosmik tezlik qiymatini ko’rsating A) 11,2 km/s B) 7,9 m/s C) 16,7 km/s D) 7,9 km/s 21 / 25 Oyda erkin tushish tezlanishi nimaga teng? (m/s2) A) 1,6 B) 1 C) 7,9 D) 9,8 22 / 25 Jismning yerga tortilish kuchi …… deb ataladi A) bosim kuchi B) reaksiya kuchi C) og’irlik kuchi D) jism og’irligi 23 / 25 Faqat butun olam tortishish kuchlari ta’sirida erkin harakat qilayotgan xar qanday jism ......... xolatida bo’ladi A) o’ta yuklanish B) vaznsizlik C) turg’un muvozanat D) turg’unmas muvozanat 24 / 25 Raketa quyosh sistemasini tark etishi uchun u yerdan 16,7 km/s tezlik bilan uchirilishi kerak. Bu tezlikni nomi A) 1-kosmik tezlik B) notekis tezlik C) 2-kosmik tezlik D) 3-kosmik tezlik 25 / 25 Erkin tushish tezlanishi jismning yer sirtidan balandligiga bog’likligi qaysi formulada ko’rsatilgan A) g/m² B) f/m C) g=GM/(R+h)² D) m/s² 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