⚛️ 27 ta sertifikat formatidagi savol

Fizika milliy sertifikat savollari va javoblari

Quyida 20 ta namuna — haqiqiy sertifikat variantlari tuzilishida. Har savol ostida «Javobni ko'rish» tugmasi. To'liq variantni vaqt bilan ishlash uchun mock testga o'ting.

📝 To'liq variantni ishlash 📅 Sanalar va format

Savol 1Fizika — 1-variant

Agar jismning $a$ — umumiy tezlanishi, $a_n$ — normal tezlanish, $a_t$ — tangensial tezlanish bo‘lsa, quyidagilardan qaysilari to‘g‘ri? $1)\ a_n > a$ $2)\ a_t > a$ $3)\ a \ge a_t$ $4)\ a \ge a_n$

A)$1$ va $3$
B)$2$ va $4$
C)$3$ va $4$
D)$1$ va $4$

Javobni ko'rish

To'g'ri javob: C) $3$ va $4$

Savol 2Fizika — 1-variant

Birinchi jism sharqqa $\frac{5}{13}\ \text{m/s}$ tezlik bilan, ikkinchi jism janubga $\frac{12}{13}\ \text{m/s}$ tezlik bilan harakat qilmoqda. Ularning nisbiy tezligini $(\text{m/s})$ toping.

A)$1$
B)$\frac{17}{13}$
C)$\frac{7}{13}$
D)$5$

Javobni ko'rish

To'g'ri javob: A) $1$

Savol 3Fizika — 1-variant

Prujinaga $5\ \text{kg}$ massali yuk osilganda u $8\ \text{sm}$ cho‘zilgan bo‘lsa, uning bikirligini $(\text{kN/m})$ toping.

A)$\frac{25}{4}$
B)$\frac{5}{8}$
C)$\frac{4}{25}$
D)$12.5$

Javobni ko'rish

To'g'ri javob: B) $\frac{5}{8}$

Savol 4Fizika — 1-variant

Agar Yerning Quyosh atrofidagi aylanish tezligi $30\ \text{m/s}$ ga teng bo‘lsa, Zuhro planetasining aylanish radiusi Yernikidan $25\%$ kam bo‘lsa, Zuhro planetasining tezligini $(\text{m/s})$ toping.

A)$30.5$
B)$34.6$
C)$39$
D)$41$

Javobni ko'rish

To'g'ri javob: B) $34.6$

Savol 5Fizika — 1-variant

Massasi $2\ \text{kg}$, tezligi $6\ \text{m/s}$ bo‘lgan va massasi $1\ \text{kg}$, tezligi $5\ \text{m/s}$ bo‘lgan jismlar o‘zaro tik holda harakat qilayotgan bo‘lsa, ularning natijaviy impulsini $(\text{kg}\cdot\text{m/s})$ toping.

A)$13$
B)$12$
C)$25$
D)$169$

Javobni ko'rish

To'g'ri javob: A) $13$

Savol 6Fizika — 1-variant

Tebranma harakat qilayotgan jismning $\frac{8}{3}$ sekunddagi tezlanishini toping.

A)$-\frac{\sqrt{3}\pi^2}{32}$
B)$-\frac{\sqrt{3}\pi^2}{32}$
C)$-\frac{\pi^2}{32}$
D)$\frac{\pi^2}{32}$

Javobni ko'rish

To'g'ri javob: B) $-\frac{\sqrt{3}\pi^2}{32}$

Savol 7Fizika — 1-variant

Agar prujinali mayatnikning to‘la energiyasi $5$ marta ortsa, tebranish amplitudasi qanday o‘zgaradi?

A)$5$ marta kamayadi
B)$5$ marta ortadi
C)$\sqrt{5}$ marta ortadi
D)$\sqrt{5}$ marta kamayadi

Javobni ko'rish

To'g'ri javob: C) $\sqrt{5}$ marta ortadi

Savol 8Fizika — 1-variant

Agar havo shari geliy o‘rniga teng miqdordagi neon gazi bilan to‘ldirilsa, uning yuk ko‘tarish qobiliyati qanday o‘zgaradi? Havoning molyar massasi $29\ \text{g/mol}$.

A)$\frac{29}{9}$
B)$\frac{29}{20}$
C)$\frac{9}{29}$
D)$\frac{25}{9}$

Javobni ko'rish

To'g'ri javob: D) $\frac{25}{9}$

Savol 9Fizika — 1-variant

Idishda $1.5\ \text{MPa}$ bosim ostida $27^\circ \text{C}$ haroratli gaz bor. Gaz temperaturasi yana $60^\circ \text{C}$ ga oshirildi va bunda idishdan gazning $40\%$ chiqib ketdi. Idishda qolgan gazning bosimini $(\text{MPa})$ toping.

A)$0.92$
B)$1.08$
C)$0.96$
D)$0.88$

Javobni ko'rish

To'g'ri javob: B) $1.08$

Savol 10Fizika — 1-variant

Xonadagi havo temperaturasi $290\ \text{K}$ dan $300\ \text{K}$ gacha isitildi. Lekin xonadagi bosim o‘zgarmagan bo‘lsa, xonadagi gazning ichki energiyasi qanday o‘zgaradi?

A)Chiziqli ortadi
B)Chiziqli kamayadi
C)O‘zgarmaydi
D)Keskin ortadi

Javobni ko'rish

To'g'ri javob: A) Chiziqli ortadi

Savol 11Fizika — 1-variant

$4$ mol bir atomli ideal gazning ichki energiyasi $9600\ \text{J}$ bo‘lsa, uning absolyut haroratini $(\text{K})$ toping.

A)$193$
B)$243$
C)$240$
D)$200$

Javobni ko'rish

To'g'ri javob: A) $193$

Savol 12Fizika — 1-variant

Havoda radiusi $2\ \text{mm}$ bo‘lgan suv tomchisining egralanishi natijasida hosil bo‘lgan qo‘shimcha bosimni $(\text{Pa})$ toping.

A)$73$
B)$146$
C)$93$
D)$116$

Javobni ko'rish

To'g'ri javob: A) $73$

Savol 13Fizika — 1-variant

Agar jism $8\ \mu C$ zaryadlangan bo‘lsa, yo‘qotilgan elektronlar sonini toping.

A)$5\cdot10^{10}$
B)$5\cdot10^{13}$
C)$5\cdot10^{12}$
D)$5\cdot10^{11}$

Javobni ko'rish

To'g'ri javob: B) $5\cdot10^{13}$

Savol 14Fizika — 1-variant

Qo‘rg‘oshin $^{207}\text{Pb}$ neytral atomidagi elektronlar sonini toping.

A)$207$
B)$125$
C)$87$
D)$82$

Javobni ko'rish

To'g'ri javob: D) $82$

Savol 15Fizika — 1-variant

Zaryadlari $Q$ va $q$ bo‘lgan zarralar $10\ \text{sm}$ masofada joylashgan. Masofa $5\ \text{sm}$ ga qisqartirish uchun $\frac{4}{5}\ \text{mJ}$ ish bajarildi. Yana $3\ \text{sm}$ ga qisqartirish uchun qanday ish $(\text{mJ})$ bajarish kerak?

A)$4.8$
B)$2.4$
C)$\frac{16}{15}$
D)$\frac{8}{15}$

Javobni ko'rish

To'g'ri javob: B) $2.4$

Savol 16Fizika — 1-variant

O‘lchamlari bir xil bo‘lgan metall sharlar $110\ \text{V}$ va $-40\ \text{V}$ potensialga ega zaryadlar bilan bir-biriga tegizildi. Birinchi zaryadning potensiali $(\text{V})$ qanday bo‘ladi?

A)$70$
B)$35$
C)$-5$
D)$140$

Javobni ko'rish

To'g'ri javob: B) $35$

Savol 17Fizika — 1-variant

Alyuminiyning qarshilik termik koeffitsiyentini aniqlash maqsadida doimiy kuchlanish ostida dastlab eriyotgan muzga solinganda tok kuchi $35\ \text{mA}$, qaynayotgan suvga solinganda $25\ \text{mA}$ bo‘ldi. Alyuminiyning termik koeffitsiyentini $(10^{-3}\ \text{K}^{-1})$ toping.

A)$28.4$
B)$36.4$
C)$4$
D)$12$

Javobni ko'rish

To'g'ri javob: C) $4$

Savol 18Fizika — 1-variant

$120\ \text{V}$ kuchlanish manbaiga ulangan rezistorda $2.5$ minutda $3.6\ \text{kJ}$ issiqlik ajralgan bo‘lsa, rezistordan oqib o‘tgan tok kuchi $(\text{A})$ qanday?

A)$0.1$
B)$1$
C)$5$
D)$0.2$

Javobni ko'rish

To'g'ri javob: D) $0.2$

Savol 19Fizika — 1-variant

O‘zgaruvchan elektr tarmog‘iga $4\ \Omega$ aktiv, sig‘im qarshiligi $2\ \Omega$ bo‘lgan kondensator va induktiv qarshiligi $5\ \Omega$ bo‘lgan g‘altak ketma-ket ulangan. Kuchlanishning effektiv qiymati $50\ \text{V}$ bo‘lsa, foydali quvvatni $(\text{W})$ toping.