Uy » Choraklik online testlar » Fizika choraklik » 7-sinf Fizika 4-chorak Fizika choraklik 7-sinf Fizika 4-chorak InfoMaster Aprel 26, 2021 951 Ko'rishlar 0 SaqlashSaqlanganOlib tashlandi 1 0 Tomonidan yaratilgan InfoMaster 7-sinf Fizika 4-chorak Testni Vafaqulov Alisher tayyorladi. 1 / 25 Lift a A) (P=mg) B) P=m(g-a) C) P=m(a-g) D) P=m(g+a) 2 / 25 Gravitatsion doimiy xalqaro birliklar sistemasida qanday birlik bilan aniqlanadi A) N/m² B) N*kg C) m³/kg*s² D) kg*m/S² 3 / 25 Yerning quyosh atrofida aylanish tezligi nimaga teng A) 1 km/s B) 10 km/s C) 40 km/s D) 30 km/s 4 / 25 Yer sirtidagi h=2R balandlikda erkin tushish tezlanishi nimaga teng A) g/9 B) g C) g/2 D) g/4 5 / 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+1) C) F*n D) F/n 6 / 25 Yerga tortilishi tufayli jismning tayanchga yoki osmaga tasr etadigan kuchi .......... deb ataladi A) og’irlik kuchi B) bosim kuchi C) reaksiya kuchi D) jism og’irligi 7 / 25 Xalqaro birliklar sistemasida kuch birligi A) kg*m²/s² B) m / s² C) kg / s² D) kg*m / s² 8 / 25 Nyutonning 3 qonuni formulasi qaysi ifodada to’g’ri ko’rsatilgan? A) F = mv²/ R B) F = - k x C) F1 =- F2 D) F = mg 9 / 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) 1 m / s² B) 2,5 m / s² C) 6 m / s ² D) 3 m / s² 10 / 25 1000 mN necha N? A) 400 B) 1 C) 10 D) 70 11 / 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) 1 B) 4 C) 3 D) 2 12 / 25 60 N kuch jismga 0,8 m/s2 tezlanish beradi. Qanday kuch bu jismga 2 m/s2 tezlanish beradi? A) 240 N B) 24 N C) 15 N D) 150 N 13 / 25 Erkin tushib harakat qilayotgan jismning tezligi har sekundda qanchaga o’zgaradi A) 15 m/s B) o’zgarmaydi C) 5 m/s D) 10 m/s 14 / 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) 25 s B) 100 s C) 5 s D) 50 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) 7 B) 4 C) 8 D) 6 16 / 25 Joyidan qo’zg’algan jism 0,2 m/s2 tezlanish bilan harakatlanganda 1 minutda u qanday tezlikka erishadi A) 0,12 m/s B) 120 m/s C) 12 m/s D) 1,2 m/s 17 / 25 Jism tezlik proporsiyasining vaqtga bog’lanish v = 3+2t (m/s) ko’rinishga ega. Ko’chish proyeksiyasining vaqtga bog’lanishi qanday? A) S = 3t + 2 t² B) S = 2t² C) S = 3t + 1 t² D) S = 2t + 3 ² 18 / 25 Tezlanish formulasi qanday ifodalanadi A) p = m / v B) p = F / S C) a = (v - v˳)/t D) S = at² / 2 19 / 25 Avtomobil 5 m/s2 tezlanish bilan tinch holatdan harakat boshladi. U 4s da necha metr yo’l o’tadi? A) 10 B) 20 C) 40 D) 30 20 / 25 25 m/s tezlik bilan yuqoriga tik otilgan jismning 2 s dan keyingi tezligi qancha bo’ladi? A) 20 m/s B) 15 m/s C) 10 m/s D) 5 m/s 21 / 25 Aylanish davri bilan chiziqli tezligi orasidagi munosabat formulasini toping. A) V=wR B) V=at C) V=2¶R/T D) V=S/t 22 / 25 Jismning vaqt birligi ichida to’liq aylanishlari soni aylanishi ….. deb ataladi A) tezligi B) tezlanishi C) davri D) chastotasi 23 / 25 Soatning minut mili burchakli tezligini toping A) π/2600 B) π/30 C) π/1800 D) π/10 24 / 25 Aylanma tekis harakatda aylanish davri va chastotasi bog’lanishi formulasini ko’rsating A) T=1/v B) T=t/N C) t=T*N D) T=2¶R/V 25 / 25 Soatning sekund mili burchakli tezligini toping. (rad/s) A) π/2600 B) π/30 C) π/10 D) π/1800 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