Uy » Choraklik online testlar » Fizika choraklik » 7-sinf Fizika 4-chorak Fizika choraklik 7-sinf Fizika 4-chorak InfoMaster Aprel 26, 2021 989 Ko'rishlar 0 SaqlashSaqlanganOlib tashlandi 1 0 Tomonidan yaratilgan InfoMaster 7-sinf Fizika 4-chorak Testni Vafaqulov Alisher tayyorladi. 1 / 25 Erkin tushish tezlanishi jismning yer sirtidan balandligiga bog’likligi qaysi formulada ko’rsatilgan A) f/m B) g=GM/(R+h)² C) g/m² D) m/s² 2 / 25 Liftdagi odam o’ta yuklanishga duch kelishi mumkinmi? A) Xa lift tezlanish bilan pastga tushganda B) Xa agar lift tezlanish bilan yuqoriga ko’tarilsa C) Yo’q D) Xa lift yuqoriga ko’tarilganda 3 / 25 Gravitatsion doimiy xalqaro birliklar sistemasida qanday birlik bilan aniqlanadi A) kg*m/S² B) m³/kg*s² C) N/m² D) N*kg 4 / 25 Yerning quyosh atrofida aylanish tezligi nimaga teng A) 1 km/s B) 10 km/s C) 30 km/s D) 40 km/s 5 / 25 Tezligi υ=5-3 t (m/s) tenglama bilan berilgan jismning boshlangich tezligi (m/s) nimaga teng? A) 2 B) 3 C) 4 D) 5 6 / 25 Erkin tushib harakat qilayotgan jismning tezligi har sekundda qanchaga o’zgaradi A) 15 m/s B) 5 m/s C) 10 m/s D) o’zgarmaydi 7 / 25 Tekis tezlanuvchan harakat qilayotgan “Matiz” 10 s davomida tezligini 54 km / soat dan 100 km / soat ga oshirdi. «Matiz»ning tezlanishini toping A) 15 m/s² B) 3 m/s² C) 2,5 m/s² D) 13 m/s² 8 / 25 Jism tekis tezlanuvchan harakat boshlab, 3-sekundda 5 m yo’l o’tdi. U harakatning boshlang’ich 3 sekundida qanday yo’l o’tadi (m) ? A) 13 B) 11 C) 7 D) 9 9 / 25 25 m/s tezlik bilan yuqoriga tik otilgan jismning 2 s dan keyingi tezligi qancha bo’ladi? A) 10 m/s B) 15 m/s C) 20 m/s D) 5 m/s 10 / 25 Erkin tushayotgan jism ikkinchi sekundda qanday masofani (m) o’tadi? A) 25 B) 35 C) 15 D) 5 11 / 25 Joyidan qo’zg’algan jism 0,3 m/s2 tezlanish bilan harakat qilib, qancha vaqtda 9 m/s tezlikka erishadi? A) 15 s B) 25 s C) 30 s D) 20 s 12 / 25 m/s2 tezlanish bilan to’g’ri chiziq bo’ylab harakatlanayotgan jismning holatidan boshlab birinchi sekunda qanday masofani (m) o’tadi? A) 8 B) 4 C) 7 D) 6 13 / 25 Boshlang’ich tezliksiz erkin tushayotgan jism 3-sekund ichida qanday masofani o’tadi? g = 10 m/s2 A) 25 m/s B) 15 m/s C) 10 m/s D) 5 m/s 14 / 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) 4 C) 2,3 D) 1,3 15 / 25 Soatning minut mili burchakli tezligini toping A) π/10 B) π/1800 C) π/30 D) π/2600 16 / 25 Jismning vaqt birligi ichida to’liq aylanishlari soni aylanishi ….. deb ataladi A) tezligi B) chastotasi C) davri D) tezlanishi 17 / 25 Agar moddiy nuqta aylana bo’ylab teng vaqtlar orasida teng yollarni bosib o’tsa, bunday harakat ....... harakat deyiladi A) notekis B) aylanma o’zgaruvchan C) tekis aylanma tezlik D) tekis 18 / 25 Soatning vaqt mili burchakli tezligini toping. (rad/s) A) π/10 B) π/2600 C) π/30 D) π/1800 19 / 25 Aylanma tekis harakatda aylanish davri va chastotasi bog’lanishi formulasini ko’rsating A) T=2¶R/V B) T=t/N C) t=T*N D) T=1/v 20 / 25 Suv quyilgan idish lift kabinasiga joylashtirilgan. Agar lift tezlanish bilan yuqoriga harakatlansa, suvning idish tubiga bosimi qanday o’zgaradi? A) Kamayadi B) Ortadi C) Ortishi xam, kamayishi xam mumkin D) O’zgarmaydi 21 / 25 Nyutonning 2-qonuni formulasini ko’rsating A) a = v/t B) a = 2s/ t² C) a = v² /R D) a = F / m 22 / 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 23 / 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) 3 m / s² C) 6 m / s ² D) 2,5 m / s² 24 / 25 1000 mN necha N? A) 70 B) 400 C) 1 D) 10 25 / 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) 1 B) 3 C) 2 D) 4 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