Uy » Choraklik online testlar » Fizika choraklik » 7-sinf Fizika 4-chorak Fizika choraklik 7-sinf Fizika 4-chorak InfoMaster Aprel 26, 2021 1046 Ko'rishlar 0 SaqlashSaqlanganOlib tashlandi 1 0 Tomonidan yaratilgan InfoMaster 7-sinf Fizika 4-chorak Testni Vafaqulov Alisher tayyorladi. 1 / 25 Jism 20 m/s tezlik bilan tik yuqoriga otildi. Jism necha sekund eng baland nuqtasigacha ko’tariladi? g = 10 m/s2 A) 1 c B) 4 c C) 3 c D) 2 c 2 / 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) 1,3 B) 4 C) 2,3 D) 3,4 3 / 25 Joyidan qo’zg’algan jism 0,3 m/s2 tezlanish bilan harakat qilib, qancha vaqtda 9 m/s tezlikka erishadi? A) 20 s B) 30 s C) 15 s D) 25 s 4 / 25 25 m/s tezlik bilan yuqoriga tik otilgan jismning 2 s dan keyingi tezligi qancha bo’ladi? A) 10 m/s B) 20 m/s C) 15 m/s D) 5 m/s 5 / 25 Joyidan qo’zg’algan jism 0,2 m/s2 tezlanish bilan harakatlanganda 1 minutda u qanday tezlikka erishadi A) 0,12 m/s B) 12 m/s C) 120 m/s D) 1,2 m/s 6 / 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 7 / 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 + 2 t² C) S = 3t + 1 t² D) S = 2t² 8 / 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) 1,2 C) 3,4 D) 1,3 9 / 25 Nyutonning 2-qonuni formulasini ko’rsating A) a = v² /R B) a = v/t C) a = 2s/ t² D) a = F / m 10 / 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) 500 N C) 1000 N D) 250 N 11 / 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) 2 B) 3 C) 4 D) 1 12 / 25 60 N kuch jismga 0,8 m/s2 tezlanish beradi. Qanday kuch bu jismga 2 m/s2 tezlanish beradi? A) 15 N B) 24 N C) 240 N D) 150 N 13 / 25 O’zaro ta’sirlashuvchi jismlarning bir-biriga ta’sir kuchlari bir to’g’ri chiziq bo’yicha yo’nalgan, moduli bo’yicha teng va yo’nalish bo’yicha qarama-qarshidir. Bu ....... A) Nyutonning 1 qonuni B) Nyutonning 3 qonuni C) Nyutonning butun olam tortishish kuchi qonuni D) Nyutonning 2 qonuni 14 / 25 Markazga intilma tezlanish formulasi qaysi ifodada to'g'ri ko’rsatilgan? A) a=v²/R B) a=F/m C) a=v/t D) a=(v-v˳)/t 15 / 25 Aylanma tekis harakatda chiziqli tezlik bilan burchak tezlik orasidagi munosabat formulasini ko’rsating A) w=4/t B) w=2¶/T C) w=2¶V D) V=wR 16 / 25 Aylanma tekis harakatga chiziqli tezlik va burchakli tezlik bog’lanish formulasini ko’rsating A) υ=ωR B) ω=2p/T C) υ=2pR/T D) ω=2p υ 17 / 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 18 / 25 Aylanish davri bilan chiziqli tezligi orasidagi munosabat formulasini toping. A) V=2¶R/T B) V=S/t C) V=wR D) V=at 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) 3 B) 4 C) 2 D) 5 20 / 25 Agar jism biror balandlikdan ikki baravar katta tezlik bilan gorizantal otilsa, uning uchish vaqti qanday o’zgaradi A) 2 marta kamayadi B) 2 marta ortadi C) 4 martta ortadi D) o’zgarmaydi 21 / 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 22 / 25 Gravitatsion doimiy xalqaro birliklar sistemasida qanday birlik bilan aniqlanadi A) kg*m/S² B) N*kg C) m³/kg*s² D) N/m² 23 / 25 Zambarakdan gorizantga burchak ostida uchib chiqqan snaryad 12 sekund uchgan. Snaryad ko’tarilgan eng yuqori balandlik qancha A) 20m B) 180m C) 360m D) 10m 24 / 25 Jismning yerga tortilish kuchi …… deb ataladi A) og’irlik kuchi B) jism og’irligi C) reaksiya kuchi D) bosim kuchi 25 / 25 Oyning yer atrofida aylanish tezligi nimaga teng A) 30 km/s B) 40 km/s C) 1 km/s D) 10 km/s 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