Uy » Choraklik online testlar » Fizika choraklik » 7-sinf Fizika 4-chorak Fizika choraklik 7-sinf Fizika 4-chorak InfoMaster Aprel 26, 2021 1071 Ko'rishlar 0 SaqlashSaqlanganOlib tashlandi 1 0 Tomonidan yaratilgan InfoMaster 7-sinf Fizika 4-chorak Testni Vafaqulov Alisher tayyorladi. 1 / 25 Tezlanish formulasi qanday ifodalanadi A) S = at² / 2 B) p = m / v C) p = F / S D) a = (v - v˳)/t 2 / 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) 100 s C) 50 s D) 5 s 3 / 25 Jism yerdan 35 m/s tezlik bilan tik yuqoriga otildi. U yerga necha sekunddan so’ng tushadi? A) 9 B) 5 C) 7 D) 3 4 / 25 m/s2 tezlanish bilan to’g’ri chiziq bo’ylab harakatlanayotgan jismning holatidan boshlab birinchi sekunda qanday masofani (m) o’tadi? A) 8 B) 4 C) 6 D) 7 5 / 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) 11 B) 9 C) 7 D) 13 6 / 25 Joyidan qo’zg’algan jism 0,2 m/s2 tezlanish bilan harakatlanganda 1 minutda u qanday tezlikka erishadi A) 1,2 m/s B) 12 m/s C) 0,12 m/s D) 120 m/s 7 / 25 Yuqoriga tik otilgan jism H balandlikkacha ko’tarildi. U 4H balandlikkacha ko’tarilishi uchun otish tezligini qanday o’zgartirishi kerak? A) 1marta orttirish B) 2marta orttirish C) 4marta orttirish D) 5marta kamaytirish 8 / 25 Avtomobil 5 m/s2 tezlanish bilan tinch holatdan harakat boshladi. U 4s da necha metr yo’l o’tadi? A) 30 B) 40 C) 10 D) 20 9 / 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) 2 c D) 4 c 10 / 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) 1 km/s B) 7,9 km/s C) 11,2 km/s D) 9,8 km/s 11 / 25 Ikki jism bir biriga F kuchi bilan tortilmoqda. Agar birining massasi n marta kamaytirilsa ular qanday kuch bilan tortiladi A) F(n+1) B) F/n C) F*n D) F(n-1) 12 / 25 Yer sirtidagi h=2R balandlikda erkin tushish tezlanishi nimaga teng A) g/9 B) g/4 C) g/2 D) g 13 / 25 Liftdagi odam o’ta yuklanishga duch kelishi mumkinmi? A) Xa lift yuqoriga ko’tarilganda B) Yo’q C) Xa lift tezlanish bilan pastga tushganda D) Xa agar lift tezlanish bilan yuqoriga ko’tarilsa 14 / 25 Oyda erkin tushish tezlanishi nimaga teng? (m/s2) A) 1,6 B) 7,9 C) 9,8 D) 1 15 / 25 Yer sirtidagi jism yerga F kuch bilan tortilmoqda. Yer sirtidan h=2R balandlikka ko’tarilsa yerga qanday kuch bilan tortiladi? R-Ep radus A) F/2 B) F/4 C) F/9 D) F/16 16 / 25 Jismning yerga tortilish kuchi …… deb ataladi A) bosim kuchi B) og’irlik kuchi C) jism og’irligi D) reaksiya kuchi 17 / 25 Yerning quyosh atrofida aylanish tezligi nimaga teng A) 40 km/s B) 10 km/s C) 1 km/s D) 30 km/s 18 / 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) 1,2 B) 1 C) 2 D) 3 19 / 25 Aylanma tekis harakatga chiziqli tezlik va burchakli tezlik bog’lanish formulasini ko’rsating A) υ=2pR/T B) υ=ωR C) ω=2p/T D) ω=2p υ 20 / 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) 2 C) 4 D) 3 21 / 25 Soatning sekund mili burchakli tezligini toping. (rad/s) A) π/1800 B) π/10 C) π/2600 D) π/30 22 / 25 Soatning minut mili aylanishining chastotasini toping.(Hz) A) 100 B) 1/100 C) 1/7200 D) 1/3600 23 / 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 24 / 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) 0,005 m/s B) 0,5 m/s C) 0,00005 m/s D) 0,0005 m/s 25 / 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) 0 C) 2 m/s² D) 1 m/s² 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