Uy » Choraklik online testlar » Fizika choraklik » 7-sinf Fizika 4-chorak Fizika choraklik 7-sinf Fizika 4-chorak InfoMaster Aprel 26, 2021 923 Ko'rishlar 0 SaqlashSaqlanganOlib tashlandi 1 0 Tomonidan yaratilgan InfoMaster 7-sinf Fizika 4-chorak Testni Vafaqulov Alisher tayyorladi. 1 / 25 Jismning vaqt birligi ichida to’liq aylanishlari soni aylanishi ….. deb ataladi A) davri B) tezlanishi C) chastotasi D) tezligi 2 / 25 Soatning minut mili burchakli tezligini toping A) π/1800 B) π/2600 C) π/10 D) π/30 3 / 25 Aylanma tekis harakatga chiziqli tezlik va burchakli tezlik bog’lanish formulasini ko’rsating A) ω=2p υ B) υ=ωR C) υ=2pR/T D) ω=2p/T 4 / 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) 5 C) 4 D) 3 5 / 25 Soatning minut mili aylanishining chastotasini toping.(Hz) A) 100 B) 1/7200 C) 1/3600 D) 1/100 6 / 25 Gorizontal tekislikda yotgan 6 kg massali jism qanday kuch ta’sirida 1s da 2 m/s tezlikka erishadi? Jismga ta’sir etayotgan ishqalanish kuchi 4 N ga teng deb xisoblang A) 16 B) 12 C) 4 D) 8 7 / 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) 1 m/s² B) 0,5 m/s² C) 2 m/s² D) 0 8 / 25 Tennischi 100 kg massali koptokni 250 N kuch bilan urganda koptok 50 m/s tezlik oldi. Zarb necha sekund davom etgan? A) 50 B) 20 C) 100 D) 10 9 / 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) 3 B) 4 C) 1 D) 2 10 / 25 Vaznsiz ko’zg’almas blok orqali o’tkazilgan vaznsiz cho’zilmas ipga massalari 6 va 4 kg bo’lgan ikki yuk osilgan. Ishqalanish yo’q. Agar bu sistema o’ziga qo’yib berilsa, yuklar qanday tezlanish (m/s2) bilan xarakat qiladi? A) 2 B) 3 C) 1 D) 4 11 / 25 Nyutonning 2-qonuni formulasini ko’rsating A) a = v/t B) a = 2s/ t² C) a = F / m D) a = v² /R 12 / 25 1000 mN necha N? A) 400 B) 1 C) 70 D) 10 13 / 25 Agar jism biror balandlikdan ikki baravar katta tezlik bilan gorizantal otilsa, uning uchish uzoqligi qanday o’zgaradi A) 4 martta ortadi B) 2 marta kamayadi C) 2 marta ortadi D) o’zgarmaydi 14 / 25 Ko’tarilish balandligi 4 marta ortishi uchun yuqoriga otilgan jismning boshlang’ich tezligini necha marta oshirish lozim A) 60 martta B) 55 martta C) 45 martta D) 50 martta 15 / 25 Zambarakdan gorizantga burchak ostida uchib chiqqan snaryad 12 sekund uchgan. Snaryad ko’tarilgan eng yuqori balandlik qancha A) 20m B) 10m C) 360m D) 180m 16 / 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-1) D) F/n 17 / 25 Yer uchun uchunchi kosmik tezlik qiymatini ko’rsating A) 11,2 km/s B) 7,9 m/s C) 7,9 km/s D) 16,7 km/s 18 / 25 Gravitatsion doimiy xalqaro birliklar sistemasida qanday birlik bilan aniqlanadi A) kg*m/S² B) m³/kg*s² C) N*kg D) N/m² 19 / 25 Faqat butun olam tortishish kuchlari ta’sirida erkin harakat qilayotgan xar qanday jism ......... xolatida bo’ladi A) turg’unmas muvozanat B) o’ta yuklanish C) vaznsizlik D) turg’un muvozanat 20 / 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) 7 B) 13 C) 11 D) 9 21 / 25 Balkondan boshlang’ich tezliksiz tushib ketgan jism 1 s da yerga etib kelgan bo’lsa, u qanday balandlikdan (m) tushgan? A) 5 B) 10 C) 15 D) 20 22 / 25 Tezlanishning o’lchov birligini ko’rsating A) m/s² B) m/s C) m²/s D) s/ m² 23 / 25 Tezlanish formulasi qanday ifodalanadi A) a = (v - v˳)/t B) S = at² / 2 C) p = F / S D) p = m / v 24 / 25 Erkin tushish deb qaysi harakatga aytiladi A) xar qanday harakatga B) jismga hech qanday kuch ta’sir qilmagandagi harakatiga C) qo’ldan qo’yib yuborgan jism harakatiga D) jismning havosiz joyda faqat yerning tortish ta’sridagi harakatiga 25 / 25 Tezligi υ=5-3 t (m/s) tenglama bilan berilgan jismning boshlangich tezligi (m/s) nimaga teng? A) 2 B) 4 C) 3 D) 5 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