Uy » Choraklik online testlar » Fizika choraklik » 7-sinf Fizika 4-chorak Fizika choraklik 7-sinf Fizika 4-chorak InfoMaster Aprel 26, 2021 1047 Ko'rishlar 0 SaqlashSaqlanganOlib tashlandi 1 0 Tomonidan yaratilgan InfoMaster 7-sinf Fizika 4-chorak Testni Vafaqulov Alisher tayyorladi. 1 / 25 Xalqaro birliklar sistemasida kuch birligi A) m / s² B) kg*m / s² C) kg / s² D) kg*m²/s² 2 / 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) 1000 N B) 500 N C) 250 N D) 200 N 3 / 25 Tennischi 100 kg massali koptokni 250 N kuch bilan urganda koptok 50 m/s tezlik oldi. Zarb necha sekund davom etgan? A) 10 B) 50 C) 20 D) 100 4 / 25 60 N kuch jismga 0,6 m/s2 tezlanish beradi. Qanday kuch bu jismga 2 m/s2 tezlanish beradi? A) 180 N B) 250 N C) 150 N D) 200 N 5 / 25 1 m/s2 tezlanish bilan tushayotgan liftdagi 20 kg massali bolaning og’irligi qancha? A) 190 N B) 170 N C) 200 N D) 180 N 6 / 25 Aylanma tekis harakatda chiziqli tezlik bilan burchak tezlik orasidagi munosabat formulasini ko’rsating A) w=2¶/T B) w=2¶V C) V=wR D) w=4/t 7 / 25 Soatning 30 mm uzunlikdagi minut uchi 10 minutda 31,4 mm uzunlikdagi yo’lni bosib o’tdi. Minut mili uchining burchak tezligini toping. A) 0,017 rad/s B) 1,7 rad/s C) 0,0017 rad/s D) 0,17 rad/s 8 / 25 Soatning sekund mili burchakli tezligini toping. (rad/s) A) π/30 B) π/2600 C) π/10 D) π/1800 9 / 25 Agar moddiy nuqta aylana bo’ylab teng vaqtlar orasida teng yollarni bosib o’tsa, bunday harakat ....... harakat deyiladi A) tekis B) notekis C) aylanma o’zgaruvchan D) tekis aylanma tezlik 10 / 25 Aylanish davri bilan chiziqli tezligi orasidagi munosabat formulasini toping. A) V=wR B) V=at C) V=S/t D) V=2¶R/T 11 / 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) 50 B) 1786 C) 2000 D) 2800 12 / 25 Avtomabil 200 m radiusli aylana yo’lda 72 km/soat tezlik bilan harakatlanadi. Uning markaziga intilma tezlanishi qancha m/s2 ga teng? A) 2 B) 3 C) 5 D) 4 13 / 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) 3 C) 2 D) 1,2 14 / 25 Aylanma tekis harakatga chiziqli tezlik va burchakli tezlik bog’lanish formulasini ko’rsating A) ω=2p/T B) ω=2p υ C) υ=ωR D) υ=2pR/T 15 / 25 Yer sirtidagi h=2R balandlikda erkin tushish tezlanishi nimaga teng A) g/2 B) g/4 C) g D) g/9 16 / 25 Ikki jism bir biriga F kuchi bilan tortilmoqda. Agar birining massasi n marta kamaytirilsa ular qanday kuch bilan tortiladi A) F*n B) F/n C) F(n+1) D) F(n-1) 17 / 25 Lift a A) (P=mg) B) P=m(g-a) C) P=m(a-g) D) P=m(g+a) 18 / 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/9 C) F/4 D) F/16 19 / 25 Liftdagi odam o’ta yuklanishga duch kelishi mumkinmi? A) Xa agar lift tezlanish bilan yuqoriga ko’tarilsa B) Yo’q C) Xa lift yuqoriga ko’tarilganda D) Xa lift tezlanish bilan pastga tushganda 20 / 25 Yer uchun birinchi kosmik tezlik qiymatini ko’rsating A) 16,7 km/s B) 7,9 km/s C) 7,9 m/s D) 11,2 km/s 21 / 25 Tezlanishning o’lchov birligini ko’rsating A) m/s B) s/ m² C) m²/s D) m/s² 22 / 25 Tezligi υ=5-3 t (m/s) tenglama bilan berilgan jismning boshlangich tezligi (m/s) nimaga teng? A) 5 B) 4 C) 2 D) 3 23 / 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) 50 s B) 25 s C) 100 s D) 5 s 24 / 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 25 / 25 Boshlang’ich tezliksiz erkin tushayotgan jism birinchi sekunda qanday masofani o’tadi?g = 10 m/s2 A) 5,5 m B) 50 m C) 5 m D) 0,5 m 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