7-sinf Fizika 3-chorak Aprel 26, 2021Aprel 26, 2021 da chop etilgan InfoMaster tomonidan 7-sinf Fizika 3-chorak ga fikr bildirilmagan. 21 7-sinf Fizika 3-chorak Testni Vafaqulov Alisher tayyorladi. 1 / 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 2 qonuni B) Nyutonning butun olam tortishish kuchi qonuni C) Nyutonning 1 qonuni D) Nyutonning 3 qonuni 2 / 25 Odam liftda turibdi. Odamga ta’sir qiluvchi kuchlar: mg – og’irlik kuchi, N – tayanch reaksiya kuchi, Lift tinch turganda kuchlar orasidagi munosabatni ko’rsating 1) mg > N 2) mg < N 3) mg = N 4) mg = 0; N = 0 A) 3 B) 1 C) 2 D) 4 3 / 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) 8 C) 4 D) 12 4 / 25 Odam liftda turibdi. Odamga ta’sir qiluvchi kuchlar: mg – og’irlik kuchi, N – tayanch reaksiya kuchi, Lift pastda to’xtashdan oldin sekinlashganda kuchlar orasidagi munosabatni ko’rsating. Lift pastda to’xtashdan oldin sekinlashyapti 1) mg > N 2) mg < N 3) mg = N 4) mg = 0; N = 0 A) 4 B) 2 C) 1 D) 3 5 / 25 1000 mN necha N? A) 400 B) 1 C) 70 D) 10 6 / 25 Odam liftda turibdi. Odamga ta’sir qiluvchi kuchlar: mg – og’irlik kuchi, N – tayanch reaksiya kuchi, Lift yuqoriga xarakatlana boshlaganda kuchlar orasidagi munosabatni ko’rsating. 1) mg > N 2) mg < N 3) mg = N 4) mg = 0; N = 0 A) 1 B) 2 C) 4 D) 3 7 / 25 Xalqaro birliklar sistemasida kuch birligi A) kg*m²/s² B) kg / s² C) kg*m / s² D) m / s² 8 / 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) 0 B) 0,5 m/s² C) 1 m/s² D) 2 m/s² 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) 2 C) 4 D) 1 10 / 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 11 / 25 Aylanma tekis harakatda chiziqli tezlik bilan burchak tezlik orasidagi munosabat formulasini ko’rsating A) w=2¶/T B) V=wR C) w=4/t D) w=2¶V 12 / 25 Soatning 30 mm uzunlikdagi minut uchi 10 minutda 31,4 mm uzunlikdagi yo’lni bosib o’tdi. Minut mili uchining burchak tezligini toping. A) 0,17 rad/s B) 0,0017 rad/s C) 0,017 rad/s D) 1,7 rad/s 13 / 25 Aylanma tekis harakatdagi chiziqli tezlik formulasini ko’rsating. 1) V=2¶R/T, 2) V=wR, 3)V=2¶RV A) 3 B) 1,2,3 C) 1 D) 2 14 / 25 Jismning vaqt birligi ichida to’liq aylanishlari soni aylanishi ….. deb ataladi A) tezligi B) chastotasi C) davri D) tezlanishi 15 / 25 Aylanish davri bilan chiziqli tezligi orasidagi munosabat formulasini toping. A) V=wR B) V=S/t C) V=2¶R/T D) V=at 16 / 25 0,1 s davomida g’ildirak 1 chapga buriladi. Uning o’qidan 5sm uzoqlikdagi nuqtasining chiziqli tezligini toping A) 50m/s B) 10m/s C) 0,5 m/s D) 5 m/s 17 / 25 Soatning minut mili aylanishining chastotasini toping.(Hz) A) 1/7200 B) 1/3600 C) 1/100 D) 100 18 / 25 Soatning minut mili burchakli tezligini toping A) π/2600 B) π/10 C) π/1800 D) π/30 19 / 25 Velosiped g’ildiragining o’qidan eng uzoq nuqtasi 0,02 s davomida 20 km yo’lni bosib o’tdi. Velosipedning tezligini toping A) 4 km/soat B) 0,36 km/soat C) 36 km/soat D) 3,6 km/soat 20 / 25 Erkin tushish deb qaysi harakatga aytiladi A) jismga hech qanday kuch ta’sir qilmagandagi harakatiga B) qo’ldan qo’yib yuborgan jism harakatiga C) xar qanday harakatga D) jismning havosiz joyda faqat yerning tortish ta’sridagi harakatiga 21 / 25 Balkondan boshlang’ich tezliksiz tushib ketgan jism 1 s da yerga etib kelgan bo’lsa, u qanday balandlikdan (m) tushgan? A) 20 B) 5 C) 15 D) 10 22 / 25 Jism harakat tenglamasi x=5+3t–t2 formula bilan berilgan. Jismning boshlang’ich koordinatasi nimaga teng? A) 3 m B) 5 m C) 1 m D) 9 m 23 / 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) 1,2 m/s D) 12 m/s 24 / 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) 3,4 B) 2,3 C) 1,3 D) 4 25 / 25 25 m/s tezlik bilan yuqoriga tik otilgan jismning 2 s dan keyingi tezligi qancha bo’ladi? A) 10 m/s B) 20 m/s C) 5 m/s D) 15 m/s 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 Fizika choraklik