Uy » Choraklik online testlar » Fizika choraklik » 7-sinf Fizika 4-chorak Fizika choraklik 7-sinf Fizika 4-chorak InfoMaster Aprel 26, 2021 1094 Ko'rishlar 0 SaqlashSaqlanganOlib tashlandi 1 1 Tomonidan yaratilgan InfoMaster 7-sinf Fizika 4-chorak Testni Vafaqulov Alisher tayyorladi. 1 / 25 Boshlang’ich tezliksiz erkin tushayotgan jism birinchi sekunda qanday masofani o’tadi?g = 10 m/s2 A) 0,5 m B) 50 m C) 5,5 m D) 5 m 2 / 25 Yuqoriga tik otilgan jism H balandlikkacha ko’tarildi. U 4H balandlikkacha ko’tarilishi uchun otish tezligini qanday o’zgartirishi kerak? A) 5marta kamaytirish B) 1marta orttirish C) 2marta orttirish D) 4marta orttirish 3 / 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 4 / 25 Jism harakat tenglamasi x=5+3t–t2 formula bilan berilgan. Jismning boshlang’ich koordinatasi nimaga teng? A) 1 m B) 9 m C) 3 m D) 5 m 5 / 25 Jismning harakat tenglamasi x = 2 – 3 t + 2 t2 formula bilan berilgan. Bu harakat uchun tezlik tenglamasini yozing A) υ= - 3 + 4 t B) υ= 4 - 3 t C) υ = 4 t D) υ= 4 + 3 t 6 / 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) 3,4 C) 1,2 D) 1,3 7 / 25 Aylanma tekis harakatda chiziqli tezlik bilan burchak tezlik orasidagi munosabat formulasini ko’rsating A) w=2¶V B) w=4/t C) V=wR D) w=2¶/T 8 / 25 Aylanma tekis harakatdagi chiziqli tezlik formulasini ko’rsating. 1) V=2¶R/T, 2) V=wR, 3)V=2¶RV A) 1,2,3 B) 3 C) 1 D) 2 9 / 25 Soatning sekund mili burchakli tezligini toping. (rad/s) A) π/1800 B) π/30 C) π/10 D) π/2600 10 / 25 Soatning vaqt mili burchakli tezligini toping. (rad/s) A) π/1800 B) π/10 C) π/30 D) π/2600 11 / 25 Soatning 30 mm uzunlikdagi minut uchi 10 minutda 31,4 mm uzunlikdagi yo’lni bosib o’tdi. Minut mili uchining burilish burchagini toping. (rad) A) 1,05 rad B) 4 rad C) 3 rad D) 5 rad 12 / 25 Avtomabil 200 m radiusli aylana yo’lda 72 km/soat tezlik bilan harakatlanadi. Uning markaziga intilma tezlanishi qancha m/s2 ga teng? A) 2 B) 4 C) 5 D) 3 13 / 25 Velosiped g’ildiragining o’qidan eng uzoq nuqtasi 0,02 s davomida 20 km yo’lni bosib o’tdi. Velosipedning tezligini toping A) 0,36 km/soat B) 3,6 km/soat C) 4 km/soat D) 36 km/soat 14 / 25 Jismning vaqt birligi ichida to’liq aylanishlari soni aylanishi ….. deb ataladi A) tezligi B) chastotasi C) davri D) tezlanishi 15 / 25 Burchakli ko’chishning vaqtga nisbati qanday fizik kattalik? A) tezlanish B) burchakli tezlik C) chastota D) davr 16 / 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) 2 m/s² B) 0 C) 0,8 m/s² D) 1 m/s² 17 / 25 Odam liftda turibdi. Odamga ta’sir qiluvchi kuchlar: mg – og’irlik kuchi, N – tayanch reaksiya kuchi, Lift tekis xarakatlanganda kuchlar orasidagi munosabatni ko’rsating. Lift yuqoriga xarakatlana boshlaydi 1) mg > N 2) mg < N 3) mg = N 4) mg = 0; N = 0 A) 4 B) 2 C) 3 D) 1 18 / 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) 3 C) 2 D) 1 19 / 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) Pastga C) Yuqoriga D) Oldinga 20 / 25 Oyning yer atrofida aylanish tezligi nimaga teng A) 1 km/s B) 10 km/s C) 30 km/s D) 40 km/s 21 / 25 Gravitatsion doimiy xalqaro birliklar sistemasida qanday birlik bilan aniqlanadi A) N*kg B) kg*m/S² C) m³/kg*s² D) N/m² 22 / 25 Yer uchun birinchi kosmik tezlik qiymatini ko’rsating A) 7,9 m/s B) 7,9 km/s C) 16,7 km/s D) 11,2 km/s 23 / 25 Erkin tushish tezlanishi jismning yer sirtidan balandligiga bog’likligi qaysi formulada ko’rsatilgan A) g=GM/(R+h)² B) g/m² C) f/m D) m/s² 24 / 25 Agar jism biror balandlikdan ikki baravar katta tezlik bilan gorizantal otilsa, uning uchish vaqti qanday o’zgaradi A) 4 martta ortadi B) 2 marta ortadi C) o’zgarmaydi D) 2 marta kamayadi 25 / 25 Yerga tortilishi tufayli jismning tayanchga yoki osmaga tasr etadigan kuchi .......... deb ataladi A) jism og’irligi B) reaksiya kuchi C) bosim kuchi D) og’irlik kuchi 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