Uy » Choraklik online testlar » Fizika choraklik » 7-sinf Fizika 4-chorak Fizika choraklik 7-sinf Fizika 4-chorak InfoMaster Aprel 26, 2021 1032 Ko'rishlar 0 SaqlashSaqlanganOlib tashlandi 1 0 Tomonidan yaratilgan InfoMaster 7-sinf Fizika 4-chorak Testni Vafaqulov Alisher tayyorladi. 1 / 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) 5 rad B) 4 rad C) 1,05 rad D) 3 rad 2 / 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) 0,00005 m/s B) 0,0005 m/s C) 0,5 m/s D) 0,005 m/s 3 / 25 Aylanma tekis harakatda aylanish davri va chastotasi bog’lanishi formulasini ko’rsating A) T=t/N B) t=T*N C) T=1/v D) T=2¶R/V 4 / 25 Jismning bir marta to’liq aylanib chiqishi uchun ketgan vaqt aylanishi …… deyiladi A) chastotasi B) davri C) tezligi D) tezlanishi 5 / 25 Soatning minut mili burchakli tezligini toping A) π/30 B) π/10 C) π/2600 D) π/1800 6 / 25 Soatning minut mili aylanishining chastotasini toping.(Hz) A) 1/7200 B) 100 C) 1/100 D) 1/3600 7 / 25 Boshlang’ich tezliksiz erkin tushayotgan jism 3-sekund ichida qanday masofani o’tadi? g = 10 m/s2 A) 5 m/s B) 25 m/s C) 15 m/s D) 10 m/s 8 / 25 Tekis sekinlanuvchan harakatda tezlik va tezlanish ishoralarining munosabatini ko’rsating. 1) υ0 > 0, a<0 2) υ0 = 0, a<0 3) υ0 < 0, a>0 4) υ >0, a>0 A) 3,4 B) 4 C) 2,3 D) 1,3 9 / 25 Avtomobil 5 m/s2 tezlanish bilan tinch holatdan harakat boshladi. U 4s da necha metr yo’l o’tadi? A) 20 B) 30 C) 40 D) 10 10 / 25 Erkin tushayotgan jism ikkinchi sekundda qanday masofani (m) o’tadi? A) 5 B) 25 C) 35 D) 15 11 / 25 Erkin tushib harakat qilayotgan jismning tezligi har sekundda qanchaga o’zgaradi A) 15 m/s B) 5 m/s C) o’zgarmaydi D) 10 m/s 12 / 25 Boshlang’ich tezliksiz erkin tushayotgan jism birinchi sekunda qanday masofani o’tadi?g = 10 m/s2 A) 0,5 m B) 5 m C) 5,5 m D) 50 m 13 / 25 Jism harakat tenglamasi x=5+3t–t2 formula bilan berilgan. Jismning boshlang’ich koordinatasi nimaga teng? A) 9 m B) 1 m C) 3 m D) 5 m 14 / 25 Ikki jism bir biriga F kuchi bilan tortilmoqda. Agar birining massasi n marta kamaytirilsa ular qanday kuch bilan tortiladi A) F/n B) F(n-1) C) F*n D) F(n+1) 15 / 25 Ko’tarilish balandligi 4 marta ortishi uchun yuqoriga otilgan jismning boshlang’ich tezligini necha marta oshirish lozim A) 60 martta B) 50 martta C) 55 martta D) 45 martta 16 / 25 Oyda erkin tushish tezlanishi nimaga teng? (m/s2) A) 9,8 B) 1,6 C) 1 D) 7,9 17 / 25 Yerning tortishish kuchi ta’sirida jismning yer atrofida aylana bo’ylab, harakatlanishida erishtiradigan tezlik ………. deyiladi A) 1-kosmik tezlik B) 2-kosmik tezlik C) notekis tezlik D) 3-kosmik tezlik 18 / 25 Lift a A) (P=mg) B) P=m(a-g) C) P=m(g+a) D) P=m(g-a) 19 / 25 Jismning yerga tortilish kuchi …… deb ataladi A) jism og’irligi B) reaksiya kuchi C) bosim kuchi D) og’irlik kuchi 20 / 25 Yer uchun ikkinchi kosmik tezlik qiymatini ko’rsating A) 11,2 km/s B) 7,9 m/s C) 7,9 km/s D) 16,7 km/s 21 / 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) 9,8 km/s B) 11,2 km/s C) 7,9 km/s D) 1 km/s 22 / 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) 4 C) 16 D) 8 23 / 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) 1 B) 3 C) 4 D) 2 24 / 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) Oldinga B) Orqaga C) Yuqoriga D) Pastga 25 / 25 Odam liftda turibdi. Odamga ta’sir qiluvchi kuchlar: mg – og’irlik kuchi, N – tayanch reaksiya kuchi, Lift pastda to’xtashdan oldin sekinlashganda kuchlar orasidagi munosabatni ko’rsating. Lift pastda to’xtashdan oldin sekinlashyapti 1) mg > N 2) mg < N 3) mg = N 4) mg = 0; N = 0 A) 2 B) 3 C) 1 D) 4 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