Uy » Choraklik online testlar » Fizika choraklik » 7-sinf Fizika 4-chorak Fizika choraklik 7-sinf Fizika 4-chorak InfoMaster Aprel 26, 2021 1230 Ko'rishlar 0 SaqlashSaqlanganOlib tashlandi 2 5 Tomonidan yaratilgan InfoMaster 7-sinf Fizika 4-chorak Testni Vafaqulov Alisher tayyorladi. 1 / 25 Tezlanishning o’lchov birligini ko’rsating A) m/s B) m²/s C) s/ m² D) m/s² 2 / 25 Joyidan qo’zg’algan jism 0,2 m/s2 tezlanish bilan harakatlanganda 1 minutda u qanday tezlikka erishadi A) 12 m/s B) 120 m/s C) 1,2 m/s D) 0,12 m/s 3 / 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) 2marta orttirish C) 5marta kamaytirish D) 1marta orttirish 4 / 25 Jism harakat tenglamasi x=5+3t–t2 formula bilan berilgan. Jismning boshlang’ich koordinatasi nimaga teng? A) 5 m B) 1 m C) 9 m D) 3 m 5 / 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) 1,3 D) 2,3 6 / 25 Markazga intilma tezlanish formulasi qaysi ifodada to'g'ri ko’rsatilgan? A) a=F/m B) a=v²/R C) a=(v-v˳)/t D) a=v/t 7 / 25 Soatning minut mili aylanishining chastotasini toping.(Hz) A) 100 B) 1/3600 C) 1/7200 D) 1/100 8 / 25 Aylanma tekis harakatda tezlanish qanday yo’nalgan? A) radius bo’ylab markazdan B) urinma bo’ylab C) xar xil yo’nalgan bo’lishi mumkin D) radius bo’ylab markazga 9 / 25 Aylanma tekis harakatda aylanish davri va chastotasi bog’lanishi formulasini ko’rsating A) T=t/N B) T=2¶R/V C) T=1/v D) t=T*N 10 / 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) 3 rad B) 5 rad C) 4 rad D) 1,05 rad 11 / 25 Agar jism biror balandlikdan ikki baravar katta tezlik bilan gorizantal otilsa, uning uchish uzoqligi qanday o’zgaradi A) o’zgarmaydi B) 2 marta ortadi C) 4 martta ortadi D) 2 marta kamayadi 12 / 25 Yerga tortilishi tufayli jismning tayanchga yoki osmaga tasr etadigan kuchi .......... deb ataladi A) jism og’irligi B) reaksiya kuchi C) bosim kuchi D) og’irlik kuchi 13 / 25 Oyda erkin tushish tezlanishi nimaga teng? (m/s2) A) 7,9 B) 1 C) 9,8 D) 1,6 14 / 25 Jismning yerga tortilish kuchi …… deb ataladi A) bosim kuchi B) og’irlik kuchi C) reaksiya kuchi D) jism og’irligi 15 / 25 Lift a A) P=m(g+a) B) P=m(g-a) C) (P=mg) D) P=m(a-g) 16 / 25 Nyutonning 3 qonuni formulasi qaysi ifodada to’g’ri ko’rsatilgan? A) F = mg B) F1 =- F2 C) F = - k x D) F = mv²/ R 17 / 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) 12 B) 16 C) 8 D) 4 18 / 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) 500 N D) 200 N 19 / 25 Xalqaro birliklar sistemasida kuch birligi A) kg*m / s² B) m / s² C) kg / s² D) kg*m²/s² 20 / 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) 6 m / s ² C) 2,5 m / s² D) 3 m / s² 21 / 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) 4 B) 1 C) 3 D) 2 22 / 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 3 qonuni C) Nyutonning 1 qonuni D) Nyutonning butun olam tortishish kuchi qonuni 23 / 25 Vaznsiz ko’zg’almas blok orqali o’tkazilgan vaznsiz cho’zilmas ipga massalari 6 va 4 kg bo’lgan ikki yuk osilgan. Ishqalanish yo’q. Agar bu sistema o’ziga qo’yib berilsa, yuklar qanday tezlanish (m/s2) bilan xarakat qiladi? A) 3 B) 4 C) 2 D) 1 24 / 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) 1 C) 3 D) 4 25 / 25 1000 mN necha N? A) 400 B) 10 C) 1 D) 70 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