Uy » Choraklik online testlar » Fizika choraklik » 7-sinf Fizika 4-chorak Fizika choraklik 7-sinf Fizika 4-chorak InfoMaster Aprel 26, 2021 1900 Ko'rishlar 0 SaqlashSaqlanganOlib tashlandi 2 1 Tomonidan yaratilgan InfoMaster 7-sinf Fizika 4-chorak Testni Vafaqulov Alisher tayyorladi. 1 / 25 Yer sirtidagi h=2R balandlikda erkin tushish tezlanishi nimaga teng A) g/9 B) g C) g/2 D) g/4 2 / 25 Agar jism biror balandlikdan ikki baravar katta tezlik bilan gorizantal otilsa, uning uchish vaqti qanday o’zgaradi A) 2 marta ortadi B) 4 martta ortadi C) o’zgarmaydi D) 2 marta kamayadi 3 / 25 Oyda erkin tushish tezlanishi nimaga teng? (m/s2) A) 7,9 B) 1,6 C) 9,8 D) 1 4 / 25 Yerning quyosh atrofida aylanish tezligi nimaga teng A) 10 km/s B) 30 km/s C) 40 km/s D) 1 km/s 5 / 25 Yerning tortishish kuchi ta’sirida jismning yer atrofida aylana bo’ylab, harakatlanishida erishtiradigan tezlik ………. deyiladi A) 2-kosmik tezlik B) 1-kosmik tezlik C) notekis tezlik D) 3-kosmik tezlik 6 / 25 Faqat butun olam tortishish kuchlari ta’sirida erkin harakat qilayotgan xar qanday jism ......... xolatida bo’ladi A) turg’un muvozanat B) turg’unmas muvozanat C) vaznsizlik D) o’ta yuklanish 7 / 25 Gravitatsion doimiy xalqaro birliklar sistemasida qanday birlik bilan aniqlanadi A) kg*m/S² B) m³/kg*s² C) N*kg D) N/m² 8 / 25 Ko’tarilish balandligi 4 marta ortishi uchun yuqoriga otilgan jismning boshlang’ich tezligini necha marta oshirish lozim A) 60 martta B) 45 martta C) 55 martta D) 50 martta 9 / 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) 7,9 km/s C) 11,2 km/s D) 9,8 km/s 10 / 25 Zambarakdan gorizantga burchak ostida uchib chiqqan snaryad 12 sekund uchgan. Snaryad ko’tarilgan eng yuqori balandlik qancha A) 20m B) 360m C) 10m D) 180m 11 / 25 Agar jism biror balandlikdan ikki baravar katta tezlik bilan gorizantal otilsa, uning uchish uzoqligi qanday o’zgaradi A) 4 martta ortadi B) 2 marta ortadi C) o’zgarmaydi D) 2 marta kamayadi 12 / 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) 2800 B) 1786 C) 2000 D) 50 13 / 25 Jismning vaqt birligi ichida to’liq aylanishlari soni aylanishi ….. deb ataladi A) tezlanishi B) tezligi C) davri D) chastotasi 14 / 25 Soatning minut mili aylanishining chastotasini toping.(Hz) A) 1/7200 B) 1/3600 C) 100 D) 1/100 15 / 25 Aylanish davri bilan chiziqli tezligi orasidagi munosabat formulasini toping. A) V=at B) V=S/t C) V=wR D) V=2¶R/T 16 / 25 Aylanma tekis harakatda aylanish davri va chastotasi bog’lanishi formulasini ko’rsating A) T=2¶R/V B) T=1/v C) t=T*N D) T=t/N 17 / 25 Jism tezlik proporsiyasining vaqtga bog’lanish v = 3+2t (m/s) ko’rinishga ega. Ko’chish proyeksiyasining vaqtga bog’lanishi qanday? A) S = 2t + 3 ² B) S = 3t + 1 t² C) S = 3t + 2 t² D) S = 2t² 18 / 25 Yuqoriga tik otilgan jism H balandlikkacha ko’tarildi. U 4H balandlikkacha ko’tarilishi uchun otish tezligini qanday o’zgartirishi kerak? A) 1marta orttirish B) 4marta orttirish C) 2marta orttirish D) 5marta kamaytirish 19 / 25 Joyidan qo’zg’algan jism 0,2 m/s2 tezlanish bilan harakatlanganda 1 minutda u qanday tezlikka erishadi A) 120 m/s B) 12 m/s C) 1,2 m/s D) 0,12 m/s 20 / 25 Balkondan boshlang’ich tezliksiz tushib ketgan jism 1 s da yerga etib kelgan bo’lsa, u qanday balandlikdan (m) tushgan? A) 15 B) 5 C) 20 D) 10 21 / 25 Boshlang’ich tezliksiz erkin tushayotgan jism 3-sekund ichida qanday masofani o’tadi? g = 10 m/s2 A) 10 m/s B) 15 m/s C) 5 m/s D) 25 m/s 22 / 25 Tennischi 100 kg massali koptokni 250 N kuch bilan urganda koptok 50 m/s tezlik oldi. Zarb necha sekund davom etgan? A) 100 B) 10 C) 20 D) 50 23 / 25 1 m/s2 tezlanish bilan tushayotgan liftdagi 20 kg massali bolaning og’irligi qancha? A) 170 N B) 180 N C) 200 N D) 190 N 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) 0 D) 2 m/s² 25 / 25 60 N kuch jismga 0,8 m/s2 tezlanish beradi. Qanday kuch bu jismga 2 m/s2 tezlanish beradi? A) 24 N B) 150 N C) 15 N D) 240 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