Uy » Choraklik online testlar » Fizika choraklik » 7-sinf Fizika 4-chorak Fizika choraklik 7-sinf Fizika 4-chorak InfoMaster Aprel 26, 2021 1020 Ko'rishlar 0 SaqlashSaqlanganOlib tashlandi 1 0 Tomonidan yaratilgan InfoMaster 7-sinf Fizika 4-chorak Testni Vafaqulov Alisher tayyorladi. 1 / 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) 4 B) 8 C) 16 D) 12 2 / 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) 1 m/s² B) 2 m/s² C) 0 D) 0,5 m/s² 3 / 25 60 N kuch jismga 0,6 m/s2 tezlanish beradi. Qanday kuch bu jismga 2 m/s2 tezlanish beradi? A) 150 N B) 250 N C) 180 N D) 200 N 4 / 25 Suv quyilgan idish lift kabinasiga joylashtirilgan. Agar lift tezlanish bilan yuqoriga harakatlansa, suvning idish tubiga bosimi qanday o’zgaradi? A) Kamayadi B) O’zgarmaydi C) Ortadi D) Ortishi xam, kamayishi xam mumkin 5 / 25 1000 mN necha N? A) 10 B) 70 C) 1 D) 400 6 / 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) 1 C) 2 D) 4 7 / 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) 2,3 B) 1,3 C) 3,4 D) 4 8 / 25 Erkin tushayotgan jism ikkinchi sekundda qanday masofani (m) o’tadi? A) 15 B) 25 C) 35 D) 5 9 / 25 Tezlanishning o’lchov birligini ko’rsating A) m²/s B) s/ m² C) m/s² D) m/s 10 / 25 Erkin tushib harakat qilayotgan jismning tezligi har sekundda qanchaga o’zgaradi A) o’zgarmaydi B) 5 m/s C) 10 m/s D) 15 m/s 11 / 25 Erkin tushish deb qaysi harakatga aytiladi A) jismning havosiz joyda faqat yerning tortish ta’sridagi harakatiga B) xar qanday harakatga C) qo’ldan qo’yib yuborgan jism harakatiga D) jismga hech qanday kuch ta’sir qilmagandagi harakatiga 12 / 25 Yuqoriga tik otilgan jism H balandlikkacha ko’tarildi. U 4H balandlikkacha ko’tarilishi uchun otish tezligini qanday o’zgartirishi kerak? A) 5marta kamaytirish B) 2marta orttirish C) 1marta orttirish D) 4marta orttirish 13 / 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 C) F/n D) F(n+1) 14 / 25 Yerning quyosh atrofida aylanish tezligi nimaga teng A) 1 km/s B) 40 km/s C) 30 km/s D) 10 km/s 15 / 25 Gravitatsion doimiy xalqaro birliklar sistemasida qanday birlik bilan aniqlanadi A) m³/kg*s² B) kg*m/S² C) N/m² D) N*kg 16 / 25 Oyda erkin tushish tezlanishi nimaga teng? (m/s2) A) 1,6 B) 1 C) 9,8 D) 7,9 17 / 25 Ko’tarilish balandligi 4 marta ortishi uchun yuqoriga otilgan jismning boshlang’ich tezligini necha marta oshirish lozim A) 45 martta B) 55 martta C) 60 martta D) 50 martta 18 / 25 Agar jism biror balandlikdan ikki baravar katta tezlik bilan gorizantal otilsa, uning uchish uzoqligi qanday o’zgaradi A) 4 martta ortadi B) o’zgarmaydi C) 2 marta ortadi D) 2 marta kamayadi 19 / 25 Raketa quyosh sistemasini tark etishi uchun u yerdan 16,7 km/s tezlik bilan uchirilishi kerak. Bu tezlikni nomi A) 3-kosmik tezlik B) 2-kosmik tezlik C) notekis tezlik D) 1-kosmik tezlik 20 / 25 Avtomabil 90 km/soat tezlik bilan tekis harakatlanmoqda. Agar avtomobil g’ildiragining raidusi 35 sm bo’lsa, g’ildirak markazidan shuncha masofa uzoqlikdagi nuqtasining markaziga intilma tezlanishini toping. (m/s2) A) 2800 B) 2000 C) 50 D) 1786 21 / 25 Aylanma tekis harakatda tezlanish qanday yo’nalgan? A) urinma bo’ylab B) xar xil yo’nalgan bo’lishi mumkin C) radius bo’ylab markazdan D) radius bo’ylab markazga 22 / 25 Jismning vaqt birligi ichida to’liq aylanishlari soni aylanishi ….. deb ataladi A) chastotasi B) davri C) tezligi D) tezlanishi 23 / 25 Soatning minut mili aylanishining chastotasini toping.(Hz) A) 100 B) 1/3600 C) 1/100 D) 1/7200 24 / 25 Aylanma tekis harakatga chiziqli tezlik va burchakli tezlik bog’lanish formulasini ko’rsating A) υ=ωR B) ω=2p υ C) ω=2p/T D) υ=2pR/T 25 / 25 Aylanma tekis harakatdagi chiziqli tezlik formulasini ko’rsating. 1) V=2¶R/T, 2) V=wR, 3)V=2¶RV A) 1,2,3 B) 1 C) 2 D) 3 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