Uy » Choraklik online testlar » Fizika choraklik » 7-sinf Fizika 4-chorak Fizika choraklik 7-sinf Fizika 4-chorak InfoMaster Aprel 26, 2021 353 Ko'rishlar 0 SaqlashSaqlanganOlib tashlandi 0 5 7-sinf Fizika 4-chorak Testni Vafaqulov Alisher tayyorladi. 1 / 25 Xalqaro birliklar sistemasida kuch birligi A) kg*m / s² B) m / s² C) kg*m²/s² D) kg / s² 2 / 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) 2 B) 1 C) 4 D) 3 3 / 25 Massasi 0,5 kg bo’lgan koptokka 0,02 s davomida zarb berilgandan keyin u 10 m / s tezlik oladi. Zarbning o’rtacha kuchini toping A) 200 N B) 250 N C) 500 N D) 1000 N 4 / 25 60 N kuch jismga 0,8 m/s2 tezlanish beradi. Qanday kuch bu jismga 2 m/s2 tezlanish beradi? A) 150 N B) 240 N C) 24 N D) 15 N 5 / 25 Agar reaktiv samolyot dvigatelining tortish kuchi 90 k N bo’lsa, massasi 60 t bo’lgan samolyot tezlik olish vaqtida qanday tezlanish bilan harakatlanadi? A) 2 m/s² B) 0 C) 0,5 m/s² D) 1 m/s² 6 / 25 Yer uchun uchunchi kosmik tezlik qiymatini ko’rsating A) 11,2 km/s B) 16,7 km/s C) 7,9 m/s D) 7,9 km/s 7 / 25 Yer sirtidagi h=2R balandlikda erkin tushish tezlanishi nimaga teng A) g/4 B) g/2 C) g/9 D) g 8 / 25 Raketa quyosh sistemasini tark etishi uchun u yerdan 16,7 km/s tezlik bilan uchirilishi kerak. Bu tezlikni nomi A) notekis tezlik B) 1-kosmik tezlik C) 2-kosmik tezlik D) 3-kosmik tezlik 9 / 25 Yer uchun ikkinchi kosmik tezlik qiymatini ko’rsating A) 16,7 km/s B) 7,9 m/s C) 7,9 km/s D) 11,2 km/s 10 / 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) 11,2 km/s B) 1 km/s C) 7,9 km/s D) 9,8 km/s 11 / 25 Agar jism biror balandlikdan ikki baravar katta tezlik bilan gorizantal otilsa, uning uchish vaqti qanday o’zgaradi A) o’zgarmaydi B) 4 martta ortadi C) 2 marta kamayadi D) 2 marta ortadi 12 / 25 Lift a A) (P=mg) B) P=m(a-g) C) P=m(g+a) D) P=m(g-a) 13 / 25 Soatning sekund mili burchakli tezligini toping. (rad/s) A) π/10 B) π/30 C) π/2600 D) π/1800 14 / 25 Aylanma tekis harakatda chiziqli tezlik bilan burchak tezlik orasidagi munosabat formulasini ko’rsating A) w=4/t B) V=wR C) w=2¶/T D) w=2¶V 15 / 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) 2000 B) 1786 C) 50 D) 2800 16 / 25 Aylanma tekis harakatda tezlanish qanday yo’nalgan? A) urinma bo’ylab B) radius bo’ylab markazdan C) xar xil yo’nalgan bo’lishi mumkin D) radius bo’ylab markazga 17 / 25 Soatning minut mili aylanishining chastotasini toping.(Hz) A) 1/100 B) 1/3600 C) 1/7200 D) 100 18 / 25 Soatning minut mili burchakli tezligini toping A) π/10 B) π/1800 C) π/30 D) π/2600 19 / 25 Tezlanishning o’lchov birligini ko’rsating A) s/ m² B) m/s² C) m/s D) m²/s 20 / 25 Avtomobil 5 m/s2 tezlanish bilan tinch holatdan harakat boshladi. U 4s da necha metr yo’l o’tadi? A) 40 B) 30 C) 10 D) 20 21 / 25 Erkin tushib harakat qilayotgan jismning tezligi har sekundda qanchaga o’zgaradi A) 10 m/s B) 15 m/s C) 5 m/s D) o’zgarmaydi 22 / 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 23 / 25 Boshlang’ich tezliksiz erkin tushayotgan jism 3-sekund ichida qanday masofani o’tadi? g = 10 m/s2 A) 25 m/s B) 10 m/s C) 5 m/s D) 15 m/s 24 / 25 Joyidan qo’zg’algan jism 0,2 m/s2 tezlanish bilan harakatlanganda 1 minutda u qanday tezlikka erishadi A) 120 m/s B) 1,2 m/s C) 12 m/s D) 0,12 m/s 25 / 25 Erkin tushish deb qaysi harakatga aytiladi A) qo’ldan qo’yib yuborgan jism harakatiga B) xar qanday harakatga C) jismga hech qanday kuch ta’sir qilmagandagi harakatiga D) jismning havosiz joyda faqat yerning tortish ta’sridagi harakatiga 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 Tomonidan Wordpress Quiz plugin Author: InfoMaster Foydali bo'lsa mamnunmiz