Uy » Choraklik online testlar » Fizika choraklik » 7-sinf Fizika 4-chorak Fizika choraklik 7-sinf Fizika 4-chorak InfoMaster Aprel 26, 2021 1007 Ko'rishlar 0 SaqlashSaqlanganOlib tashlandi 1 0 Tomonidan yaratilgan InfoMaster 7-sinf Fizika 4-chorak Testni Vafaqulov Alisher tayyorladi. 1 / 25 Avtomobil 5 m/s2 tezlanish bilan tinch holatdan harakat boshladi. U 4s da necha metr yo’l o’tadi? A) 40 B) 10 C) 30 D) 20 2 / 25 Jism tekis tezlanuvchan harakat boshlab, 3-sekundda 5 m yo’l o’tdi. U harakatning boshlang’ich 3 sekundida qanday yo’l o’tadi (m) ? A) 7 B) 9 C) 13 D) 11 3 / 25 Erkin tushib harakat qilayotgan jismning tezligi har sekundda qanchaga o’zgaradi A) 5 m/s B) o’zgarmaydi C) 10 m/s D) 15 m/s 4 / 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 5 / 25 Boshlang’ich tezliksiz erkin tushayotgan jism 3-sekund ichida qanday masofani o’tadi? g = 10 m/s2 A) 10 m/s B) 5 m/s C) 15 m/s D) 25 m/s 6 / 25 Tezlanishning o’lchov birligini ko’rsating A) m/s² B) m/s C) m²/s D) s/ m² 7 / 25 Yer sirtidagi h=2R balandlikda erkin tushish tezlanishi nimaga teng A) g B) g/4 C) g/2 D) g/9 8 / 25 Gravitatsion doimiy xalqaro birliklar sistemasida qanday birlik bilan aniqlanadi A) N*kg B) N/m² C) m³/kg*s² D) kg*m/S² 9 / 25 Raketa quyosh sistemasini tark etishi uchun u yerdan 16,7 km/s tezlik bilan uchirilishi kerak. Bu tezlikni nomi A) 3-kosmik tezlik B) 2-kosmik tezlik C) 1-kosmik tezlik D) notekis tezlik 10 / 25 Yerning quyosh atrofida aylanish tezligi nimaga teng A) 40 km/s B) 10 km/s C) 30 km/s D) 1 km/s 11 / 25 Lift a A) (P=mg) B) P=m(a-g) C) P=m(g-a) D) P=m(g+a) 12 / 25 Oyning yer atrofida aylanish tezligi nimaga teng A) 1 km/s B) 30 km/s C) 40 km/s D) 10 km/s 13 / 25 Jismning yerga tortilish kuchi …… deb ataladi A) jism og’irligi B) bosim kuchi C) og’irlik kuchi D) reaksiya kuchi 14 / 25 Burchakli ko’chishning vaqtga nisbati qanday fizik kattalik? A) chastota B) davr C) tezlanish D) burchakli tezlik 15 / 25 Jismning bir marta to’liq aylanib chiqishi uchun ketgan vaqt aylanishi …… deyiladi A) chastotasi B) davri C) tezligi D) tezlanishi 16 / 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) 2 C) 1 D) 1,2 17 / 25 Soatning vaqt mili burchakli tezligini toping. (rad/s) A) π/2600 B) π/30 C) π/1800 D) π/10 18 / 25 0,1 s davomida g’ildirak 1 chapga buriladi. Uning o’qidan 5sm uzoqlikdagi nuqtasining chiziqli tezligini toping A) 5 m/s B) 50m/s C) 10m/s D) 0,5 m/s 19 / 25 Avtomabil 200 m radiusli aylana yo’lda 72 km/soat tezlik bilan harakatlanadi. Uning markaziga intilma tezlanishi qancha m/s2 ga teng? A) 4 B) 2 C) 3 D) 5 20 / 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 21 / 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) 4 B) 2 C) 3 D) 1 22 / 25 Odam liftda turibdi. Odamga ta’sir qiluvchi kuchlar: mg – og’irlik kuchi, N – tayanch reaksiya kuchi, Lift tinch turganda kuchlar orasidagi munosabatni ko’rsating 1) mg > N 2) mg < N 3) mg = N 4) mg = 0; N = 0 A) 3 B) 4 C) 1 D) 2 23 / 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) 1 m/s² B) 0,5 m/s² C) 2 m/s² D) 0 24 / 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) 4 B) 8 C) 12 D) 16 25 / 25 1 m/s2 tezlanish bilan tushayotgan liftdagi 20 kg massali bolaning og’irligi qancha? A) 200 N B) 180 N C) 170 N D) 190 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