Uy » Choraklik online testlar » Fizika choraklik » 7-sinf Fizika 4-chorak Fizika choraklik 7-sinf Fizika 4-chorak InfoMaster Aprel 26, 2021 1058 Ko'rishlar 0 SaqlashSaqlanganOlib tashlandi 1 0 Tomonidan yaratilgan InfoMaster 7-sinf Fizika 4-chorak Testni Vafaqulov Alisher tayyorladi. 1 / 25 Aylana bo’ylab tekis harakatda markazga intilma tezlanish formulasini ko’rsating. 1) a=v2/R, 2) a=v2/2R, 3) a=v/t A) 3 B) 1,2 C) 1 D) 2 2 / 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) 4 km/soat D) 3,6 km/soat 3 / 25 Aylanma tekis harakatda aylanish davri va chastotasi bog’lanishi formulasini ko’rsating A) T=1/v B) T=2¶R/V C) t=T*N D) T=t/N 4 / 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) 2 B) 1 C) 100 D) 10 5 / 25 Burchakli ko’chishning vaqtga nisbati qanday fizik kattalik? A) burchakli tezlik B) davr C) chastota D) tezlanish 6 / 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) 0,17 rad/s B) 0,017 rad/s C) 0,0017 rad/s D) 1,7 rad/s 7 / 25 Erkin tushish deb qaysi harakatga aytiladi A) jismga hech qanday kuch ta’sir qilmagandagi harakatiga B) qo’ldan qo’yib yuborgan jism harakatiga C) xar qanday harakatga D) jismning havosiz joyda faqat yerning tortish ta’sridagi harakatiga 8 / 25 Tezlanish formulasi qanday ifodalanadi A) p = F / S B) S = at² / 2 C) a = (v - v˳)/t D) p = m / v 9 / 25 Avtomobil 5 m/s2 tezlanish bilan tinch holatdan harakat boshladi. U 4s da necha metr yo’l o’tadi? A) 40 B) 20 C) 30 D) 10 10 / 25 Tekis tezlanuvchan harakat qilayotgan “Matiz” 10 s davomida tezligini 54 km / soat dan 100 km / soat ga oshirdi. «Matiz»ning tezlanishini toping A) 13 m/s² B) 15 m/s² C) 2,5 m/s² D) 3 m/s² 11 / 25 Oyda erkin tushish tezlanishi nimaga teng? (m/s2) A) 7,9 B) 1 C) 9,8 D) 1,6 12 / 25 Jismning yerga tortilish kuchi …… deb ataladi A) bosim kuchi B) jism og’irligi C) reaksiya kuchi D) og’irlik kuchi 13 / 25 Oyning yer atrofida aylanish tezligi nimaga teng A) 30 km/s B) 40 km/s C) 10 km/s D) 1 km/s 14 / 25 Yer sirtidagi jism yerga F kuch bilan tortilmoqda. Yer sirtidan h=2R balandlikka ko’tarilsa yerga qanday kuch bilan tortiladi? R-Ep radus A) F/2 B) F/4 C) F/9 D) F/16 15 / 25 Lift a A) (P=mg) B) P=m(g-a) C) P=m(a-g) D) P=m(g+a) 16 / 25 Faqat butun olam tortishish kuchlari ta’sirida erkin harakat qilayotgan xar qanday jism ......... xolatida bo’ladi A) vaznsizlik B) turg’unmas muvozanat C) turg’un muvozanat D) o’ta yuklanish 17 / 25 Yerning quyosh atrofida aylanish tezligi nimaga teng A) 40 km/s B) 1 km/s C) 30 km/s D) 10 km/s 18 / 25 Yer uchun ikkinchi kosmik tezlik qiymatini ko’rsating A) 16,7 km/s B) 11,2 km/s C) 7,9 km/s D) 7,9 m/s 19 / 25 Nyutonning 3 qonuni formulasi qaysi ifodada to’g’ri ko’rsatilgan? A) F = - k x B) F = mg C) F1 =- F2 D) F = mv²/ R 20 / 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) 6 m / s ² B) 3 m / s² C) 2,5 m / s² D) 1 m / s² 21 / 25 1 m/s2 tezlanish bilan tushayotgan liftdagi 20 kg massali bolaning og’irligi qancha? A) 200 N B) 170 N C) 190 N D) 180 N 22 / 25 Xalqaro birliklar sistemasida kuch birligi A) m / s² B) kg / s² C) kg*m²/s² D) kg*m / s² 23 / 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) Orqaga B) Oldinga C) Yuqoriga D) Pastga 24 / 25 Massasi 4 kg bo’lgan jism biror kuch ta’siri ostida 2 m/s2 tezlanish oldi. Shunday kuch ta’siri ostida massasi 10 kg bo’lgan jism qanday tezlanish oladi? A) 1 m/s² B) 0,8 m/s² C) 2 m/s² D) 0 25 / 25 60 N kuch jismga 0,6 m/s2 tezlanish beradi. Qanday kuch bu jismga 2 m/s2 tezlanish beradi? A) 200 N B) 150 N C) 180 N D) 250 N 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