Uy » Choraklik online testlar » Fizika choraklik » 7-sinf Fizika 4-chorak Fizika choraklik 7-sinf Fizika 4-chorak InfoMaster Aprel 26, 2021 844 Ko'rishlar 0 SaqlashSaqlanganOlib tashlandi 1 0 7-sinf Fizika 4-chorak Testni Vafaqulov Alisher tayyorladi. 1 / 25 Balkondan boshlang’ich tezliksiz tushib ketgan jism 1 s da yerga etib kelgan bo’lsa, u qanday balandlikdan (m) tushgan? A) 10 B) 5 C) 15 D) 20 2 / 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) 1,3 C) 3,4 D) 1,2 3 / 25 Jism 20 m/s tezlik bilan tik yuqoriga otildi. Jism necha sekund eng baland nuqtasigacha ko’tariladi? g = 10 m/s2 A) 4 c B) 1 c C) 3 c D) 2 c 4 / 25 m/s2 tezlanish bilan to’g’ri chiziq bo’ylab harakatlanayotgan jismning holatidan boshlab birinchi sekunda qanday masofani (m) o’tadi? A) 4 B) 6 C) 8 D) 7 5 / 25 Tezlanish formulasi qanday ifodalanadi A) S = at² / 2 B) p = F / S C) a = (v - v˳)/t D) p = m / v 6 / 25 Tezlanishning o’lchov birligini ko’rsating A) m²/s B) s/ m² C) m/s D) m/s² 7 / 25 Joyidan qo’zg’algan jism 0,3 m/s2 tezlanish bilan harakat qilib, qancha vaqtda 9 m/s tezlikka erishadi? A) 25 s B) 30 s C) 20 s D) 15 s 8 / 25 Erkin tushib harakat qilayotgan jismning tezligi har sekundda qanchaga o’zgaradi A) o’zgarmaydi B) 15 m/s C) 5 m/s D) 10 m/s 9 / 25 Tezligi υ=5-3 t (m/s) tenglama bilan berilgan jismning boshlangich tezligi (m/s) nimaga teng? A) 5 B) 3 C) 4 D) 2 10 / 25 Oyning yer atrofida aylanish tezligi nimaga teng A) 1 km/s B) 30 km/s C) 40 km/s D) 10 km/s 11 / 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 12 / 25 Soatning minut mili burchakli tezligini toping A) π/10 B) π/2600 C) π/1800 D) π/30 13 / 25 Burchakli ko’chishning vaqtga nisbati qanday fizik kattalik? A) tezlanish B) burchakli tezlik C) chastota D) davr 14 / 25 Aylanma tekis harakatda tezlanish qanday yo’nalgan? A) radius bo’ylab markazdan B) radius bo’ylab markazga C) urinma bo’ylab D) xar xil yo’nalgan bo’lishi mumkin 15 / 25 Soatning minut mili aylanishining chastotasini toping.(Hz) A) 1/7200 B) 1/3600 C) 100 D) 1/100 16 / 25 Soatning sekund mili burchakli tezligini toping. (rad/s) A) π/30 B) π/2600 C) π/1800 D) π/10 17 / 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) 4 rad C) 1,05 rad D) 5 rad 18 / 25 Massasi 4 kg bo’lgan jism biror kuch ta’siri ostida 2 m/s2 tezlanish oldi. Shunday kuch ta’siri ostida massasi 10 kg bo’lgan jism qanday tezlanish oladi? A) 0 B) 0,8 m/s² C) 2 m/s² D) 1 m/s² 19 / 25 Xalqaro birliklar sistemasida kuch birligi A) kg / s² B) kg*m²/s² C) kg*m / s² D) m / s² 20 / 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) 3 D) 4 21 / 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) 12 D) 4 22 / 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) 250 N B) 1000 N C) 200 N D) 500 N 23 / 25 Motosikl botiq ko’prik ustida tekis harakatlanmoqda. Ko’prikning eng quyi nuqtasiga yetganida unga qo’yilgan kuchlarning teng ta’sir etuvchisi qanday yo’nalgan bo’ladi? A) Oldinga B) Orqaga C) Pastga D) Yuqoriga 24 / 25 1 m/s2 tezlanish bilan tushayotgan liftdagi 20 kg massali bolaning og’irligi qancha? A) 170 N B) 200 N C) 190 N D) 180 N 25 / 25 Suv quyilgan idish lift kabinasiga joylashtirilgan. Agar lift tezlanish bilan yuqoriga harakatlansa, suvning idish tubiga bosimi qanday o’zgaradi? A) Ortadi B) Ortishi xam, kamayishi xam mumkin C) O’zgarmaydi D) Kamayadi 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 Author: InfoMaster Foydali bo'lsa mamnunmiz