Uy » Choraklik online testlar » Fizika choraklik » 7-sinf Fizika 3-chorak Fizika choraklik 7-sinf Fizika 3-chorak InfoMaster Aprel 26, 2021 838 Ko'rishlar 204 izohlar SaqlashSaqlanganOlib tashlandi 5 1 7-sinf Fizika 3-chorak Testni Vafaqulov Alisher tayyorladi. 1 / 25 Aylanish davri bilan chiziqli tezligi orasidagi munosabat formulasini toping. A) V=at B) V=wR C) V=2¶R/T D) V=S/t 2 / 25 Agar moddiy nuqta aylana bo’ylab teng vaqtlar orasida teng yollarni bosib o’tsa, bunday harakat ....... harakat deyiladi A) notekis B) aylanma o’zgaruvchan C) tekis D) tekis aylanma tezlik 3 / 25 Soatning minut mili aylanishining chastotasini toping.(Hz) A) 1/3600 B) 1/7200 C) 100 D) 1/100 4 / 25 Aylanma tekis harakatdagi chiziqli tezlik formulasini ko’rsating. 1) V=2¶R/T, 2) V=wR, 3)V=2¶RV A) 2 B) 1 C) 3 D) 1,2,3 5 / 25 Jismning bir marta to’liq aylanib chiqishi uchun ketgan vaqt aylanishi …… deyiladi A) davri B) tezligi C) tezlanishi D) chastotasi 6 / 25 Jismning vaqt birligi ichida to’liq aylanishlari soni aylanishi ….. deb ataladi A) tezlanishi B) davri C) chastotasi D) tezligi 7 / 25 Markazga intilma tezlanish formulasi qaysi ifodada to'g'ri ko’rsatilgan? A) a=v²/R B) a=v/t C) a=(v-v˳)/t D) a=F/m 8 / 25 Velosiped raridusi 25 m bo’lgan aylanma yo’lda 10 m/s tezlik bilan tekis harakatlanmoqda. Uning markazga intilma tezlanishini toping. (m/s²) A) 5 B) 4 C) 2 D) 3 9 / 25 Uzunligi 25 sm bo’lgan ipga bog’langan sharcha 5 m/s chiziqli tezlik bilan aylanmoqda. Sharning markaziga intilma tezlanishini toping. (m/s2) A) 1 B) 100 C) 2 D) 10 10 / 25 Massasi m = 10 kg bo’lgan jismga 25 N kuch ta’sir qilmoqda. Shu kuch ta’sirida u qanday tezlanish bilan harakat qiladi? A) 6 m / s ² B) 3 m / s² C) 1 m / s² D) 2,5 m / s² 11 / 25 Massasi 60 kg bo’lgan jism tik yuqoriga 1 m /s2 tezlanish bilan ko’tarilayotgan bo’lsa, uning og’irligi qanday bo’ladi? A) 480 N B) 600 N C) 540 N D) 660 N 12 / 25 1000 mN necha N? A) 400 B) 10 C) 1 D) 70 13 / 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) 1 D) 3 14 / 25 Suv quyilgan idish lift kabinasiga joylashtirilgan. Agar lift tezlanish bilan yuqoriga harakatlansa, suvning idish tubiga bosimi qanday o’zgaradi? A) Ortishi xam, kamayishi xam mumkin B) O’zgarmaydi C) Kamayadi D) Ortadi 15 / 25 Nyutonning 2-qonuni formulasini ko’rsating A) a = v² /R B) a = v/t C) a = 2s/ t² D) a = F / m 16 / 25 60 N kuch jismga 0,8 m/s2 tezlanish beradi. Qanday kuch bu jismga 2 m/s2 tezlanish beradi? A) 24 N B) 15 N C) 150 N D) 240 N 17 / 25 Qaysi shart bajarilganda, jism suyuqlikda tekis cho’ka boshlaydi? (mg-og’irlik kuchi, Fa- Arximed kuchi, F-qarshilik kuchi) 1) m g > F = F a 2) m g = F 3) m g = F = F a 4) mg < F = F a A) 1 B) 2 C) 4 D) 3 18 / 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 19 / 25 Tezlanishning o’lchov birligini ko’rsating A) m²/s B) m/s² C) m/s D) s/ m² 20 / 25 Erkin tushayotgan jism ikkinchi sekundda qanday masofani (m) o’tadi? A) 25 B) 35 C) 15 D) 5 21 / 25 Boshlang’ich tezliksiz erkin tushayotgan jism 3-sekund ichida qanday masofani o’tadi? g = 10 m/s2 A) 25 m/s B) 5 m/s C) 15 m/s D) 10 m/s 22 / 25 Tezlanish formulasi qanday ifodalanadi A) a = (v - v˳)/t B) p = m / v C) p = F / S D) S = at² / 2 23 / 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) 1,3 B) 2,4 C) 3,4 D) 1,2 24 / 25 Jism 20 m/s tezlik bilan tik yuqoriga otildi. Jism necha sekund eng baland nuqtasigacha ko’tariladi? g = 10 m/s2 A) 3 c B) 1 c C) 4 c D) 2 c 25 / 25 Tezligi υ=5-3 t (m/s) tenglama bilan berilgan jismning boshlangich tezligi (m/s) nimaga teng? A) 2 B) 4 C) 3 D) 5 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