Uy » Choraklik online testlar » Fizika choraklik » 7-sinf Fizika 4-chorak Fizika choraklik 7-sinf Fizika 4-chorak InfoMaster Aprel 26, 2021 1290 Ko'rishlar 0 SaqlashSaqlanganOlib tashlandi 2 8 Tomonidan yaratilgan InfoMaster 7-sinf Fizika 4-chorak Testni Vafaqulov Alisher tayyorladi. 1 / 25 Jismning yerga tortilish kuchi …… deb ataladi A) bosim kuchi B) reaksiya kuchi C) og’irlik kuchi D) jism og’irligi 2 / 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 3 / 25 Lift a A) P=m(a-g) B) P=m(g+a) C) (P=mg) D) P=m(g-a) 4 / 25 Yerning tortishish kuchi ta’sirida jismning yer atrofida aylana bo’ylab, harakatlanishida erishtiradigan tezlik ………. deyiladi A) 1-kosmik tezlik B) 2-kosmik tezlik C) notekis tezlik D) 3-kosmik tezlik 5 / 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) 6 / 25 Burchakli ko’chishning vaqtga nisbati qanday fizik kattalik? A) chastota B) burchakli tezlik C) davr D) tezlanish 7 / 25 Jismning vaqt birligi ichida to’liq aylanishlari soni aylanishi ….. deb ataladi A) davri B) tezlanishi C) chastotasi D) tezligi 8 / 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) 0,17 rad/s B) 0,017 rad/s C) 0,0017 rad/s D) 1,7 rad/s 9 / 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) 4 C) 3 D) 5 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 Odam liftda turibdi. Odamga ta’sir qiluvchi kuchlar: mg – og’irlik kuchi, N – tayanch reaksiya kuchi, Lift tekis xarakatlanganda kuchlar orasidagi munosabatni ko’rsating. Lift yuqoriga xarakatlana boshlaydi 1) mg > N 2) mg < N 3) mg = N 4) mg = 0; N = 0 A) 4 B) 1 C) 2 D) 3 12 / 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) 2 B) 4 C) 3 D) 1 13 / 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) 0 D) 2 m/s² 14 / 25 60 N kuch jismga 0,6 m/s2 tezlanish beradi. Qanday kuch bu jismga 2 m/s2 tezlanish beradi? A) 150 N B) 250 N C) 200 N D) 180 N 15 / 25 Erkin tushayotgan jism ikkinchi sekundda qanday masofani (m) o’tadi? A) 35 B) 5 C) 25 D) 15 16 / 25 Tezlanishning o’lchov birligini ko’rsating A) m²/s B) m/s² C) m/s D) s/ m² 17 / 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 + 1 t² C) S = 3t + 2 t² D) S = 2t² 18 / 25 Erkin tushish deb qaysi harakatga aytiladi A) jismning havosiz joyda faqat yerning tortish ta’sridagi harakatiga B) qo’ldan qo’yib yuborgan jism harakatiga C) xar qanday harakatga D) jismga hech qanday kuch ta’sir qilmagandagi harakatiga 19 / 25 Yuqoriga tik otilgan jism H balandlikkacha ko’tarildi. U 4H balandlikkacha ko’tarilishi uchun otish tezligini qanday o’zgartirishi kerak? A) 4marta orttirish B) 5marta kamaytirish C) 2marta orttirish D) 1marta orttirish 20 / 25 Tekis tezlanuvchan harakat qilayotgan “Matiz” 10 s davomida tezligini 54 km / soat dan 100 km / soat ga oshirdi. «Matiz»ning tezlanishini toping A) 2,5 m/s² B) 15 m/s² C) 13 m/s² D) 3 m/s² 21 / 25 Jism 20 m/s tezlik bilan tik yuqoriga otildi. Jism necha sekund eng baland nuqtasigacha ko’tariladi? g = 10 m/s2 A) 4 c B) 3 c C) 2 c D) 1 c 22 / 25 Jismning harakat tenglamasi x = 2 – 3 t + 2 t2 formula bilan berilgan. Bu harakat uchun tezlik tenglamasini yozing A) υ = 4 t B) υ= 4 + 3 t C) υ= 4 - 3 t D) υ= - 3 + 4 t 23 / 25 Jism yerdan 35 m/s tezlik bilan tik yuqoriga otildi. U yerga necha sekunddan so’ng tushadi? A) 9 B) 5 C) 3 D) 7 24 / 25 25 m/s tezlik bilan yuqoriga tik otilgan jismning 2 s dan keyingi tezligi qancha bo’ladi? A) 10 m/s B) 15 m/s C) 20 m/s D) 5 m/s 25 / 25 Jism harakat tenglamasi x=5+3t–t2 formula bilan berilgan. Jismning boshlang’ich koordinatasi nimaga teng? A) 3 m B) 5 m C) 9 m D) 1 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