Uy » Choraklik online testlar » Fizika choraklik » 7-sinf Fizika 4-chorak Fizika choraklik 7-sinf Fizika 4-chorak InfoMaster Aprel 26, 2021 1044 Ko'rishlar 0 SaqlashSaqlanganOlib tashlandi 1 0 Tomonidan yaratilgan InfoMaster 7-sinf Fizika 4-chorak Testni Vafaqulov Alisher tayyorladi. 1 / 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) 250 N C) 200 N D) 500 N 2 / 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 3 / 25 Suv quyilgan idish lift kabinasiga joylashtirilgan. Agar lift tezlanish bilan yuqoriga harakatlansa, suvning idish tubiga bosimi qanday o’zgaradi? A) Ortishi xam, kamayishi xam mumkin B) Kamayadi C) Ortadi D) O’zgarmaydi 4 / 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) 2 m/s² C) 1 m/s² D) 0 5 / 25 1 m/s2 tezlanish bilan tushayotgan liftdagi 20 kg massali bolaning og’irligi qancha? A) 170 N B) 200 N C) 180 N D) 190 N 6 / 25 Nyutonning 3 qonuni formulasi qaysi ifodada to’g’ri ko’rsatilgan? A) F = mg B) F1 =- F2 C) F = mv²/ R D) F = - k x 7 / 25 1000 mN necha N? A) 10 B) 1 C) 400 D) 70 8 / 25 Tezlanishning o’lchov birligini ko’rsating A) s/ m² B) m/s C) m/s² D) m²/s 9 / 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) 3,4 B) 1,3 C) 2,4 D) 1,2 10 / 25 Boshlang’ich tezliksiz erkin tushayotgan jism birinchi sekunda qanday masofani o’tadi?g = 10 m/s2 A) 50 m B) 5,5 m C) 0,5 m D) 5 m 11 / 25 Tekis sekinlanuvchan harakatda tezlik va tezlanish ishoralarining munosabatini ko’rsating. 1) υ0 > 0, a<0 2) υ0 = 0, a<0 3) υ0 < 0, a>0 4) υ >0, a>0 A) 2,3 B) 1,3 C) 3,4 D) 4 12 / 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) 25 s C) 100 s D) 50 s 13 / 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) 1marta orttirish C) 5marta kamaytirish D) 2marta orttirish 14 / 25 Boshlang’ich tezliksiz erkin tushayotgan jism 3-sekund ichida qanday masofani o’tadi? g = 10 m/s2 A) 15 m/s B) 25 m/s C) 5 m/s D) 10 m/s 15 / 25 m/s2 tezlanish bilan to’g’ri chiziq bo’ylab harakatlanayotgan jismning holatidan boshlab birinchi sekunda qanday masofani (m) o’tadi? A) 4 B) 6 C) 8 D) 7 16 / 25 Aylanma tekis harakatdagi chiziqli tezlik formulasini ko’rsating. 1) V=2¶R/T, 2) V=wR, 3)V=2¶RV A) 2 B) 1,2,3 C) 3 D) 1 17 / 25 Soatning sekund mili burchakli tezligini toping. (rad/s) A) π/1800 B) π/10 C) π/30 D) π/2600 18 / 25 Aylanish davri bilan chiziqli tezligi orasidagi munosabat formulasini toping. A) V=S/t B) V=2¶R/T C) V=at D) V=wR 19 / 25 Soatning minut mili burchakli tezligini toping A) π/2600 B) π/30 C) π/10 D) π/1800 20 / 25 Markazga intilma tezlanish formulasi qaysi ifodada to'g'ri ko’rsatilgan? A) a=F/m B) a=v²/R C) a=v/t D) a=(v-v˳)/t 21 / 25 0,1 s davomida g’ildirak 1 chapga buriladi. Uning o’qidan 5sm uzoqlikdagi nuqtasining chiziqli tezligini toping A) 50m/s B) 0,5 m/s C) 5 m/s D) 10m/s 22 / 25 Oyning yer atrofida harakatlanish tezligini toping. Yer massasi 6*10 24 kg, yer bilan oy orasidagi masofa 400 000 km gravitatsion doimiylik Nm2/kg2 A) 11,2 km/s B) 7,9 km/s C) 1 km/s D) 9,8 km/s 23 / 25 Yerning tortishish kuchi ta’sirida jismning yer atrofida aylana bo’ylab, harakatlanishida erishtiradigan tezlik ………. deyiladi A) 2-kosmik tezlik B) notekis tezlik C) 1-kosmik tezlik D) 3-kosmik tezlik 24 / 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) 25 / 25 Erkin tushish tezlanishi jismning yer sirtidan balandligiga bog’likligi qaysi formulada ko’rsatilgan A) g/m² B) f/m C) g=GM/(R+h)² D) m/s² 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