Uy » Choraklik online testlar » Fizika choraklik » 7-sinf Fizika 4-chorak Fizika choraklik 7-sinf Fizika 4-chorak InfoMaster Aprel 26, 2021 1020 Ko'rishlar 0 SaqlashSaqlanganOlib tashlandi 1 0 Tomonidan yaratilgan InfoMaster 7-sinf Fizika 4-chorak Testni Vafaqulov Alisher tayyorladi. 1 / 25 Burchakli ko’chishning vaqtga nisbati qanday fizik kattalik? A) chastota B) davr C) tezlanish D) burchakli tezlik 2 / 25 Soatning sekund mili burchakli tezligini toping. (rad/s) A) π/10 B) π/1800 C) π/2600 D) π/30 3 / 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) 4 C) 3 D) 2 4 / 25 Soatning vaqt mili burchakli tezligini toping. (rad/s) A) π/10 B) π/2600 C) π/30 D) π/1800 5 / 25 Aylanish davri bilan chiziqli tezligi orasidagi munosabat formulasini toping. A) V=2¶R/T B) V=at C) V=wR D) V=S/t 6 / 25 Tezligi υ=5-3 t (m/s) tenglama bilan berilgan jismning boshlangich tezligi (m/s) nimaga teng? A) 2 B) 5 C) 3 D) 4 7 / 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 8 / 25 m/s2 tezlanish bilan to’g’ri chiziq bo’ylab harakatlanayotgan jismning holatidan boshlab birinchi sekunda qanday masofani (m) o’tadi? A) 6 B) 7 C) 4 D) 8 9 / 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) 3 m/s² C) 13 m/s² D) 15 m/s² 10 / 25 Tekis tezlanuvchan harakatda tezlik va tezlanish ishoralarning munosabatini ko’rsating. 1) υ0 > 0, a>0 2) υ0 > 0, a<0 3) υ0 < 0, a<0 4) υ0<0, a>0 A) 2,4 B) 1,2 C) 1,3 D) 3,4 11 / 25 Jism tezlik proporsiyasining vaqtga bog’lanish v = 3+2t (m/s) ko’rinishga ega. Ko’chish proyeksiyasining vaqtga bog’lanishi qanday? A) S = 2t² B) S = 3t + 2 t² C) S = 3t + 1 t² D) S = 2t + 3 ² 12 / 25 Yerning tortishish kuchi ta’sirida jismning yer atrofida aylana bo’ylab, harakatlanishida erishtiradigan tezlik ………. deyiladi A) notekis tezlik B) 3-kosmik tezlik C) 2-kosmik tezlik D) 1-kosmik tezlik 13 / 25 Yer uchun birinchi kosmik tezlik qiymatini ko’rsating A) 7,9 km/s B) 16,7 km/s C) 11,2 km/s D) 7,9 m/s 14 / 25 Erkin tushish tezlanishi jismning yer sirtidan balandligiga bog’likligi qaysi formulada ko’rsatilgan A) f/m B) g/m² C) m/s² D) g=GM/(R+h)² 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/9 B) F/2 C) F/4 D) F/16 16 / 25 Gravitatsion doimiy xalqaro birliklar sistemasida qanday birlik bilan aniqlanadi A) N/m² B) m³/kg*s² C) kg*m/S² D) N*kg 17 / 25 Faqat butun olam tortishish kuchlari ta’sirida erkin harakat qilayotgan xar qanday jism ......... xolatida bo’ladi A) vaznsizlik B) turg’unmas muvozanat C) turg’un muvozanat D) o’ta yuklanish 18 / 25 Liftdagi odam o’ta yuklanishga duch kelishi mumkinmi? A) Xa agar lift tezlanish bilan yuqoriga ko’tarilsa B) Yo’q C) Xa lift tezlanish bilan pastga tushganda D) Xa lift yuqoriga ko’tarilganda 19 / 25 Oyda erkin tushish tezlanishi nimaga teng? (m/s2) A) 1,6 B) 7,9 C) 9,8 D) 1 20 / 25 Jismning yerga tortilish kuchi …… deb ataladi A) bosim kuchi B) og’irlik kuchi C) jism og’irligi D) reaksiya kuchi 21 / 25 Massasi 60 kg bo’lgan jism tik yuqoriga 1 m /s2 tezlanish bilan ko’tarilayotgan bo’lsa, uning og’irligi qanday bo’ladi? A) 600 N B) 540 N C) 480 N D) 660 N 22 / 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) 1 C) 2 D) 4 23 / 25 Xalqaro birliklar sistemasida kuch birligi A) m / s² B) kg*m²/s² C) kg*m / s² D) kg / s² 24 / 25 1 m/s2 tezlanish bilan tushayotgan liftdagi 20 kg massali bolaning og’irligi qancha? A) 200 N B) 170 N C) 190 N D) 180 N 25 / 25 60 N kuch jismga 0,6 m/s2 tezlanish beradi. Qanday kuch bu jismga 2 m/s2 tezlanish beradi? A) 250 N B) 150 N C) 180 N D) 200 N 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