Uy » Choraklik online testlar » Fizika choraklik » 7-sinf Fizika 3-chorak Fizika choraklik 7-sinf Fizika 3-chorak InfoMaster Aprel 26, 2021 822 Ko'rishlar 204 izohlar SaqlashSaqlanganOlib tashlandi 4 0 7-sinf Fizika 3-chorak Testni Vafaqulov Alisher tayyorladi. 1 / 25 Tekis tezlanuvchan harakat qilayotgan “Matiz” 10 s davomida tezligini 54 km / soat dan 100 km / soat ga oshirdi. «Matiz»ning tezlanishini toping A) 13 m/s² B) 3 m/s² C) 2,5 m/s² D) 15 m/s² 2 / 25 Jism harakat tenglamasi x=5+3t–t2 formula bilan berilgan. Jismning boshlang’ich koordinatasi nimaga teng? A) 9 m B) 1 m C) 5 m D) 3 m 3 / 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) 3,4 C) 1,3 D) 4 4 / 25 Joyidan qo’zg’algan jism 0,3 m/s2 tezlanish bilan harakat qilib, qancha vaqtda 9 m/s tezlikka erishadi? A) 30 s B) 15 s C) 20 s D) 25 s 5 / 25 Boshlang’ich tezliksiz erkin tushayotgan jism 3-sekund ichida qanday masofani o’tadi? g = 10 m/s2 A) 10 m/s B) 25 m/s C) 15 m/s D) 5 m/s 6 / 25 Erkin tushish deb qaysi harakatga aytiladi A) jismga hech qanday kuch ta’sir qilmagandagi harakatiga B) xar qanday harakatga C) qo’ldan qo’yib yuborgan jism harakatiga D) jismning havosiz joyda faqat yerning tortish ta’sridagi harakatiga 7 / 25 Tennischi 100 kg massali koptokni 250 N kuch bilan urganda koptok 50 m/s tezlik oldi. Zarb necha sekund davom etgan? A) 20 B) 50 C) 100 D) 10 8 / 25 1 m/s2 tezlanish bilan tushayotgan liftdagi 20 kg massali bolaning og’irligi qancha? A) 170 N B) 180 N C) 200 N D) 190 N 9 / 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) 3 B) 2 C) 4 D) 1 10 / 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) 0,8 m/s² B) 1 m/s² C) 2 m/s² D) 0 11 / 25 1000 mN necha N? A) 400 B) 1 C) 70 D) 10 12 / 25 Xalqaro birliklar sistemasida kuch birligi A) m / s² B) kg / s² C) kg*m / s² D) kg*m²/s² 13 / 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) 1 B) 2 C) 4 D) 3 14 / 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) 4 B) 1 C) 3 D) 2 15 / 25 Aylanma tekis harakatda tezlanish qanday yo’nalgan? A) radius bo’ylab markazga B) radius bo’ylab markazdan C) xar xil yo’nalgan bo’lishi mumkin D) urinma bo’ylab 16 / 25 Avtomabil 200 m radiusli aylana yo’lda 72 km/soat tezlik bilan harakatlanadi. Uning markaziga intilma tezlanishi qancha m/s2 ga teng? A) 5 B) 2 C) 3 D) 4 17 / 25 Aylanma tekis harakatda chiziqli tezlik bilan burchak tezlik orasidagi munosabat formulasini ko’rsating A) w=2¶V B) w=4/t C) w=2¶/T D) V=wR 18 / 25 Aylanma tekis harakatda aylanish davri va chastotasi bog’lanishi formulasini ko’rsating A) T=1/v B) T=2¶R/V C) t=T*N D) T=t/N 19 / 25 Jismning bir marta to’liq aylanib chiqishi uchun ketgan vaqt aylanishi …… deyiladi A) chastotasi B) tezlanishi C) davri D) tezligi 20 / 25 Aylanma tekis harakatga chiziqli tezlik va burchakli tezlik bog’lanish formulasini ko’rsating A) υ=ωR B) ω=2p/T C) ω=2p υ D) υ=2pR/T 21 / 25 Velosiped raridusi 25 m bo’lgan aylanma yo’lda 10 m/s tezlik bilan tekis harakatlanmoqda. Uning markazga intilma tezlanishini toping. (m/s²) A) 2 B) 5 C) 4 D) 3 22 / 25 Uzunligi 25 sm bo’lgan ipga bog’langan sharcha 5 m/s chiziqli tezlik bilan aylanmoqda. Sharning markaziga intilma tezlanishini toping. (m/s2) A) 100 B) 10 C) 2 D) 1 23 / 25 Burchakli ko’chishning vaqtga nisbati qanday fizik kattalik? A) davr B) burchakli tezlik C) chastota D) tezlanish 24 / 25 Soatning sekund mili burchakli tezligini toping. (rad/s) A) π/10 B) π/1800 C) π/2600 D) π/30 25 / 25 Markazga intilma tezlanish formulasi qaysi ifodada to'g'ri ko’rsatilgan? A) a=v/t B) a=v²/R C) a=F/m D) a=(v-v˳)/t 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