Uy » Choraklik online testlar » Fizika choraklik » 7-sinf Fizika 3-chorak Fizika choraklik 7-sinf Fizika 3-chorak InfoMaster Aprel 26, 2021 833 Ko'rishlar 204 izohlar SaqlashSaqlanganOlib tashlandi 4 0 7-sinf Fizika 3-chorak Testni Vafaqulov Alisher tayyorladi. 1 / 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) 120 m/s C) 12 m/s D) 1,2 m/s 2 / 25 Jism tezlik proporsiyasining vaqtga bog’lanish v = 3+2t (m/s) ko’rinishga ega. Ko’chish proyeksiyasining vaqtga bog’lanishi qanday? A) S = 3t + 2 t² B) S = 2t² C) S = 2t + 3 ² D) S = 3t + 1 t² 3 / 25 Samolyot qo’nish paytida g’ildiraklari yerga tekkandagi tezligi 360 km/soat. Agar uning tezlanishi 2m/s2 bo’lsa, u qancha vaqtdan keyin to’xtaydi A) 25 s B) 50 s C) 5 s D) 100 s 4 / 25 Boshlang’ich tezliksiz erkin tushayotgan jism 3-sekund ichida qanday masofani o’tadi? g = 10 m/s2 A) 10 m/s B) 25 m/s C) 5 m/s D) 15 m/s 5 / 25 Tezlanish formulasi qanday ifodalanadi A) p = F / S B) a = (v - v˳)/t C) S = at² / 2 D) p = m / v 6 / 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 7 / 25 m/s2 tezlanish bilan to’g’ri chiziq bo’ylab harakatlanayotgan jismning holatidan boshlab birinchi sekunda qanday masofani (m) o’tadi? A) 6 B) 8 C) 7 D) 4 8 / 25 Erkin tushib harakat qilayotgan jismning tezligi har sekundda qanchaga o’zgaradi A) 15 m/s B) 5 m/s C) 10 m/s D) o’zgarmaydi 9 / 25 Agar moddiy nuqta aylana bo’ylab teng vaqtlar orasida teng yollarni bosib o’tsa, bunday harakat ....... harakat deyiladi A) aylanma o’zgaruvchan B) tekis aylanma tezlik C) notekis D) tekis 10 / 25 0,1 s davomida g’ildirak 1 chapga buriladi. Uning o’qidan 5sm uzoqlikdagi nuqtasining chiziqli tezligini toping A) 50m/s B) 10m/s C) 5 m/s D) 0,5 m/s 11 / 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) 1 B) 1,2 C) 3 D) 2 12 / 25 Markazga intilma tezlanish formulasi qaysi ifodada to'g'ri ko’rsatilgan? A) a=F/m B) a=(v-v˳)/t C) a=v/t D) a=v²/R 13 / 25 Avtomabil 90 km/soat tezlik bilan tekis harakatlanmoqda. Agar avtomobil g’ildiragining raidusi 35 sm bo’lsa, g’ildirak markazidan shuncha masofa uzoqlikdagi nuqtasining markaziga intilma tezlanishini toping. (m/s2) A) 2000 B) 1786 C) 2800 D) 50 14 / 25 Soatning minut mili burchakli tezligini toping A) π/1800 B) π/2600 C) π/10 D) π/30 15 / 25 Aylanma tekis harakatda chiziqli tezlik bilan burchak tezlik orasidagi munosabat formulasini ko’rsating A) w=2¶/T B) w=4/t C) V=wR D) w=2¶V 16 / 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 17 / 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) 500 N B) 200 N C) 250 N D) 1000 N 18 / 25 Tennischi 100 kg massali koptokni 250 N kuch bilan urganda koptok 50 m/s tezlik oldi. Zarb necha sekund davom etgan? A) 100 B) 50 C) 10 D) 20 19 / 25 1000 mN necha N? A) 10 B) 70 C) 400 D) 1 20 / 25 60 N kuch jismga 0,8 m/s2 tezlanish beradi. Qanday kuch bu jismga 2 m/s2 tezlanish beradi? A) 150 N B) 15 N C) 24 N D) 240 N 21 / 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) 4 B) 2 C) 3 D) 1 22 / 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) 0 B) 1 m/s² C) 2 m/s² D) 0,5 m/s² 23 / 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) 0,8 m/s² B) 1 m/s² C) 2 m/s² D) 0 24 / 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) 600 N B) 480 N C) 660 N D) 540 N 25 / 25 60 N kuch jismga 0,6 m/s2 tezlanish beradi. Qanday kuch bu jismga 2 m/s2 tezlanish beradi? A) 200 N B) 180 N C) 250 N D) 150 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 Tomonidan Wordpress Quiz plugin Author: InfoMaster Foydali bo'lsa mamnunmiz