Uy » Choraklik online testlar » Fizika choraklik » 7-sinf Fizika 4-chorak Fizika choraklik 7-sinf Fizika 4-chorak InfoMaster Aprel 26, 2021 1049 Ko'rishlar 0 SaqlashSaqlanganOlib tashlandi 1 0 Tomonidan yaratilgan InfoMaster 7-sinf Fizika 4-chorak Testni Vafaqulov Alisher tayyorladi. 1 / 25 Yer uchun uchunchi kosmik tezlik qiymatini ko’rsating A) 16,7 km/s B) 7,9 m/s C) 7,9 km/s D) 11,2 km/s 2 / 25 Yer uchun birinchi kosmik tezlik qiymatini ko’rsating A) 7,9 km/s B) 7,9 m/s C) 16,7 km/s D) 11,2 km/s 3 / 25 Oyning yer atrofida aylanish tezligi nimaga teng A) 1 km/s B) 10 km/s C) 30 km/s D) 40 km/s 4 / 25 Agar jism biror balandlikdan ikki baravar katta tezlik bilan gorizantal otilsa, uning uchish vaqti qanday o’zgaradi A) 2 marta kamayadi B) 2 marta ortadi C) 4 martta ortadi D) o’zgarmaydi 5 / 25 Yer uchun ikkinchi kosmik tezlik qiymatini ko’rsating A) 7,9 m/s B) 7,9 km/s C) 16,7 km/s D) 11,2 km/s 6 / 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 7 / 25 Avtomabil 200 m radiusli aylana yo’lda 72 km/soat tezlik bilan harakatlanadi. Uning markaziga intilma tezlanishi qancha m/s2 ga teng? A) 5 B) 3 C) 4 D) 2 8 / 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 9 / 25 Soatning 30 mm uzunlikdagi minut uchi 10 minutda 31,4 mm uzunlikdagi yo’lni bosib o’tdi. Minut mili uchining burilish burchagini toping. (rad) A) 3 rad B) 1,05 rad C) 4 rad D) 5 rad 10 / 25 Markazga intilma tezlanish formulasi qaysi ifodada to'g'ri ko’rsatilgan? A) a=v²/R B) a=v/t C) a=F/m D) a=(v-v˳)/t 11 / 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) 10 B) 2 C) 1 D) 100 12 / 25 Aylanma tekis harakatdagi chiziqli tezlik formulasini ko’rsating. 1) V=2¶R/T, 2) V=wR, 3)V=2¶RV A) 1,2,3 B) 3 C) 1 D) 2 13 / 25 Velosiped g’ildiragining o’qidan eng uzoq nuqtasi 0,02 s davomida 20 km yo’lni bosib o’tdi. Velosipedning tezligini toping A) 3,6 km/soat B) 0,36 km/soat C) 4 km/soat D) 36 km/soat 14 / 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 15 / 25 Xalqaro birliklar sistemasida kuch birligi A) kg*m²/s² B) kg / s² C) kg*m / s² D) m / s² 16 / 25 1 m/s2 tezlanish bilan tushayotgan liftdagi 20 kg massali bolaning og’irligi qancha? A) 190 N B) 170 N C) 180 N D) 200 N 17 / 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) 10 C) 20 D) 50 18 / 25 Nyutonning 2-qonuni formulasini ko’rsating A) a = F / m B) a = 2s/ t² C) a = v/t D) a = v² /R 19 / 25 Jism yerdan 35 m/s tezlik bilan tik yuqoriga otildi. U yerga necha sekunddan so’ng tushadi? A) 7 B) 9 C) 3 D) 5 20 / 25 Erkin tushib harakat qilayotgan jismning tezligi har sekundda qanchaga o’zgaradi A) 15 m/s B) 10 m/s C) 5 m/s D) o’zgarmaydi 21 / 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) 5 s B) 50 s C) 25 s D) 100 s 22 / 25 Erkin tushish deb qaysi harakatga aytiladi A) jismning havosiz joyda faqat yerning tortish ta’sridagi harakatiga B) xar qanday harakatga C) qo’ldan qo’yib yuborgan jism harakatiga D) jismga hech qanday kuch ta’sir qilmagandagi harakatiga 23 / 25 Jism harakat tenglamasi x=5+3t–t2 formula bilan berilgan. Jismning boshlang’ich koordinatasi nimaga teng? A) 9 m B) 1 m C) 5 m D) 3 m 24 / 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 25 / 25 Jismning harakat tenglamasi x = 2 – 3 t + 2 t2 formula bilan berilgan. Bu harakat uchun tezlik tenglamasini yozing A) υ= 4 - 3 t B) υ= 4 + 3 t C) υ = 4 t D) υ= - 3 + 4 t 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