7-sinf Fizika 4-chorak Aprel 26, 2021Aprel 26, 2021 da chop etilgan InfoMaster tomonidan 7-sinf Fizika 4-chorak ga fikr bildirilmagan. 1 Tomonidan yaratilgan InfoMaster 7-sinf Fizika 4-chorak Testni Vafaqulov Alisher tayyorladi. 1 / 25 Jism yerdan 35 m/s tezlik bilan tik yuqoriga otildi. U yerga necha sekunddan so’ng tushadi? A) 7 B) 3 C) 9 D) 5 2 / 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) 4 C) 8 D) 7 3 / 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) 3,4 C) 1,2 D) 1,3 4 / 25 Erkin tushish deb qaysi harakatga aytiladi A) xar qanday harakatga B) jismga hech qanday kuch ta’sir qilmagandagi harakatiga C) qo’ldan qo’yib yuborgan jism harakatiga D) jismning havosiz joyda faqat yerning tortish ta’sridagi harakatiga 5 / 25 Tezligi υ=5-3 t (m/s) tenglama bilan berilgan jismning boshlangich tezligi (m/s) nimaga teng? A) 4 B) 2 C) 3 D) 5 6 / 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) 4 B) 3,4 C) 2,3 D) 1,3 7 / 25 Boshlang’ich tezliksiz erkin tushayotgan jism birinchi sekunda qanday masofani o’tadi?g = 10 m/s2 A) 50 m B) 0,5 m C) 5 m D) 5,5 m 8 / 25 Joyidan qo’zg’algan jism 0,3 m/s2 tezlanish bilan harakat qilib, qancha vaqtda 9 m/s tezlikka erishadi? A) 20 s B) 25 s C) 30 s D) 15 s 9 / 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) 12 C) 4 D) 8 10 / 25 1000 mN necha N? A) 70 B) 1 C) 10 D) 400 11 / 25 60 N kuch jismga 0,8 m/s2 tezlanish beradi. Qanday kuch bu jismga 2 m/s2 tezlanish beradi? A) 240 N B) 15 N C) 24 N D) 150 N 12 / 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) 500 N C) 250 N D) 200 N 13 / 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) 3 B) 1 C) 2 D) 4 14 / 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) 1 B) 2 C) 4 D) 3 15 / 25 Odam liftda turibdi. Odamga ta’sir qiluvchi kuchlar: mg – og’irlik kuchi, N – tayanch reaksiya kuchi, Lift yuqorida to’xtashdan oldin sekinlashganda kuchlar orasidagi munosabatni ko’rsating. Lift yuqorida to’xtashdan oldin sekinlashyapti 1) mg > N 2) mg < N 3) mg = N 4) mg = 0; N = 0 A) 1 B) 3 C) 2 D) 4 16 / 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) 2 B) 3 C) 1 D) 4 17 / 25 Aylanma tekis harakatga chiziqli tezlik va burchakli tezlik bog’lanish formulasini ko’rsating A) ω=2p/T B) ω=2p υ C) υ=2pR/T D) υ=ωR 18 / 25 Markazga intilma tezlanish formulasi qaysi ifodada to'g'ri ko’rsatilgan? A) a=(v-v˳)/t B) a=v/t C) a=v²/R D) a=F/m 19 / 25 Soatning minut mili aylanishining chastotasini toping.(Hz) A) 1/100 B) 1/3600 C) 100 D) 1/7200 20 / 25 Agar jism biror balandlikdan ikki baravar katta tezlik bilan gorizantal otilsa, uning uchish vaqti qanday o’zgaradi A) 2 marta kamayadi B) o’zgarmaydi C) 2 marta ortadi D) 4 martta ortadi 21 / 25 Faqat butun olam tortishish kuchlari ta’sirida erkin harakat qilayotgan xar qanday jism ......... xolatida bo’ladi A) turg’unmas muvozanat B) turg’un muvozanat C) vaznsizlik D) o’ta yuklanish 22 / 25 Oyda erkin tushish tezlanishi nimaga teng? (m/s2) A) 1,6 B) 7,9 C) 1 D) 9,8 23 / 25 Liftdagi odam o’ta yuklanishga duch kelishi mumkinmi? A) Xa lift tezlanish bilan pastga tushganda B) Yo’q C) Xa agar lift tezlanish bilan yuqoriga ko’tarilsa D) Xa lift yuqoriga ko’tarilganda 24 / 25 Lift a A) (P=mg) B) P=m(g+a) C) P=m(a-g) D) P=m(g-a) 25 / 25 Yerga tortilishi tufayli jismning tayanchga yoki osmaga tasr etadigan kuchi .......... deb ataladi A) bosim kuchi B) jism og’irligi C) og’irlik kuchi D) reaksiya kuchi 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 tomonidan Wordpress Quiz plugin Fizika choraklik
