Uy » Choraklik online testlar » Fizika choraklik » 7-sinf Fizika 4-chorak Fizika choraklik 7-sinf Fizika 4-chorak InfoMaster Aprel 26, 2021 1061 Ko'rishlar 0 SaqlashSaqlanganOlib tashlandi 1 0 Tomonidan yaratilgan InfoMaster 7-sinf Fizika 4-chorak Testni Vafaqulov Alisher tayyorladi. 1 / 25 Aylanma tekis harakatda aylanish davri va chastotasi bog’lanishi formulasini ko’rsating A) t=T*N B) T=t/N C) T=1/v D) T=2¶R/V 2 / 25 Aylana bo’ylab tekis harakatda markazga intilma tezlanish formulasini ko’rsating. 1) a=v2/R, 2) a=v2/2R, 3) a=v/t A) 2 B) 1 C) 1,2 D) 3 3 / 25 Markazga intilma tezlanish formulasi qaysi ifodada to'g'ri ko’rsatilgan? A) a=v²/R B) a=F/m C) a=(v-v˳)/t D) a=v/t 4 / 25 Aylanma tekis harakatga chiziqli tezlik va burchakli tezlik bog’lanish formulasini ko’rsating A) υ=2pR/T B) υ=ωR C) ω=2p υ D) ω=2p/T 5 / 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) 5 rad B) 1,05 rad C) 3 rad D) 4 rad 6 / 25 Soatning minut mili burchakli tezligini toping A) π/30 B) π/1800 C) π/2600 D) π/10 7 / 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 C) 1,2,3 D) 3 8 / 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) 100 C) 2 D) 1 9 / 25 25 m/s tezlik bilan yuqoriga tik otilgan jismning 2 s dan keyingi tezligi qancha bo’ladi? A) 20 m/s B) 10 m/s C) 15 m/s D) 5 m/s 10 / 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) 4 C) 3,4 D) 1,3 11 / 25 Joyidan qo’zg’algan jism 0,2 m/s2 tezlanish bilan harakatlanganda 1 minutda u qanday tezlikka erishadi A) 120 m/s B) 1,2 m/s C) 12 m/s D) 0,12 m/s 12 / 25 Tezligi υ=5-3 t (m/s) tenglama bilan berilgan jismning boshlangich tezligi (m/s) nimaga teng? A) 3 B) 2 C) 5 D) 4 13 / 25 Tezlanish formulasi qanday ifodalanadi A) p = m / v B) a = (v - v˳)/t C) S = at² / 2 D) p = F / S 14 / 25 Yerning quyosh atrofida aylanish tezligi nimaga teng A) 30 km/s B) 1 km/s C) 10 km/s D) 40 km/s 15 / 25 Yer uchun birinchi kosmik tezlik qiymatini ko’rsating A) 7,9 km/s B) 11,2 km/s C) 16,7 km/s D) 7,9 m/s 16 / 25 Oyning yer atrofida aylanish tezligi nimaga teng A) 10 km/s B) 1 km/s C) 40 km/s D) 30 km/s 17 / 25 Liftdagi odam o’ta yuklanishga duch kelishi mumkinmi? A) Yo’q B) Xa lift tezlanish bilan pastga tushganda C) Xa agar lift tezlanish bilan yuqoriga ko’tarilsa D) Xa lift yuqoriga ko’tarilganda 18 / 25 Oyda erkin tushish tezlanishi nimaga teng? (m/s2) A) 7,9 B) 1,6 C) 1 D) 9,8 19 / 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) 9,8 km/s B) 1 km/s C) 11,2 km/s D) 7,9 km/s 20 / 25 Zambarakdan gorizantga burchak ostida uchib chiqqan snaryad 12 sekund uchgan. Snaryad ko’tarilgan eng yuqori balandlik qancha A) 180m B) 20m C) 10m D) 360m 21 / 25 Massasi m = 10 kg bo’lgan jismga 25 N kuch ta’sir qilmoqda. Shu kuch ta’sirida u qanday tezlanish bilan harakat qiladi? A) 3 m / s² B) 6 m / s ² C) 2,5 m / s² D) 1 m / s² 22 / 25 Xalqaro birliklar sistemasida kuch birligi A) kg / s² B) kg*m / s² C) m / s² D) kg*m²/s² 23 / 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 24 / 25 O’zaro ta’sirlashuvchi jismlarning bir-biriga ta’sir kuchlari bir to’g’ri chiziq bo’yicha yo’nalgan, moduli bo’yicha teng va yo’nalish bo’yicha qarama-qarshidir. Bu ....... A) Nyutonning butun olam tortishish kuchi qonuni B) Nyutonning 1 qonuni C) Nyutonning 3 qonuni D) Nyutonning 2 qonuni 25 / 25 Nyutonning 2-qonuni formulasini ko’rsating A) a = 2s/ t² B) a = F / m C) a = v² /R D) a = v/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