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9-sinf Fizika 3-chorak

InfoMaster

May 21, 2021

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9-sinf Fizika 3-chorak

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1 / 25

Moddaning bir moldagi atomlar yoki molekulalar soni ........ doimiysi deb ataladi, va uning qiymati ....?

A) Avogadro 6*10²⁴ 1/ mol

B) Avogadro 6*10²³ 1/ mol

C) Avogadro 6*10²⁶ 1/ mol

D) Avogadro 6*10³⁴ 1/ mol

2 / 25

Azotning molyar massasi 0,028 kg/mol. Azot molekulasining massasi nimaga teng

A) 4,6 * 10¯²⁴ g

B) 4,6 * 10¯⁴² g

C) 56 * 10¯²³ g

D) 4,6 * 10¯²³ g

3 / 25

Molekulalarning xarakat tezliklarini tajribada birinchi bo'lib ....... aniqlanadi

A) Maksvell

B) Shtern

C) Avogadro

D) Broun

4 / 25

Izoxorik jarayon uchun termodinamikaning 1-qonuni

A) Q= ΔU+A

B) ΔU=-A

C) Q= ΔU

D) Q=A

5 / 25

100 K Selsiy shkalasida nimaga teng

A) 373 gradus S

B) 100 gradus S

C) - 373 gradus S

D) -173 gradus S

6 / 25

Klapeyron - Mendelev tenglamashini ko’rsating

A) PV = RT/M

B) PV = mRT/M

C) Pr = mRT/v

D) Pm = vRT/M

7 / 25

Selsiy shkalasidagi t temperatura Kelvin shkalasidagi tempratura bilan bog’lanish formulasi …. ?

A) T = t + 273

B) T = t- 273

C) T = - t - 273

D) T = 273 - t

8 / 25

Termodinamikaning 1-qonuni formulasi

A) Q= l m

B) Q=cm Δt

C) Q=L m

D) Q=A+ΔU

9 / 25

Gazning o’zgarmas hajmida sodir bo'ladigan bir holatdan boshqa holatga o'tish jarayoni ……. jarayon deyiladi

A) izoxorik

B) adibatik

C) izobarik

D) izotermik

10 / 25

Selsiy shkalasining nol nuqtasi nimani bildiradi

A) Suvning qotish temperaturasi

B) Suvning qaynash temperaturasi

C) Suvning kritik temperaturasi

D) Tabiatda bo’lishi mumkin bo'lgan eng past temperatura

11 / 25

Bu nuqsonda ko’z gavhari tasvirni to’r pardada emas, balki uning old qismida hosil qiladi. Bunday odamlar qanday linzadan yasalgan ko’zoynak taqadi?

A) Yaqindan ko’rarlik, botiq

B) Uzoqdan ko’rarlik, qavariq

C) Ranglarni ajratmaslik, botiq

D) Daltonizm, qavariq

12 / 25

Fokus masofasi F, buyumdan linzagacha masofa d, linzadan tasvirgacha masofa f bo’lsa, d>2F, F

A) Fotoapparat

B) Lupa

C) Proyeksion apparat

D) Fotoapparat va ko’z

13 / 25

Yorug’likning vakuumdagi tezligi (m/s)

A) 200 000 000

B) 3 000

C) 300 000 000

D) 30 000

14 / 25

D = 1 / L₀ - 1 / d₁ formula yordamida nima aniqlanadi? L₀- sog’ ko'zning yaxshi ko'rish masofasi, d₁- nuqsonli ko’zning yaxshi ko’rish masofasi

A) Linzaning optik kuchini

B) Nuqsonni ko’z uchun ko’zoynak optik kuchini

C) Linzaning fokus masofasini

D) Ko’zning eng yaxshi ko’rish masofasini

15 / 25

1/F=(n-1)(1/R1+1/R2) formulada n nimani bildiradi?

A) Linzaning suvga nisbatan nur sindirish ko’rsatkichi

B) Atrof-muxitning linzaga nisbatan nur sindirish ko’rsatkichi

C) Sfera radiuslari nisbati

D) Linzaning absolyut nur sindirish ko’rsatkichi

16 / 25

Nur suvdan havoga tushmoqda. Bunda to’la ichki qaytish hodisasini kuzatish mumkinmi?

A) Nurning tushish burchagiga bog’liq

B) Ha

C) Yo’q

D) Suv qatlamining qalinligiga bog’liq

17 / 25

Bu nuqsonda ko’z gavhari nurlarni to’r parda orqasiga to’playdi. Nuqsonning nomini ayting. Bunday odamlar qanday linzadan yasalgan ko’zoynak taqadi?

A) Uzoqdan ko’rarlik, qavariq

B) Ranglarni ajratmaslik, botiq

C) Daltonizm, qavariq

D) Yaqindan ko’rarlik, botiq

18 / 25

Yorug’lik tezligining to’lqin uzunligiga va tebranish davriga bog’liqlik formulasini ko’rsating

A) υ = at

B) υ = S / t

C) υ = λ / ν

D) c = λ / T

19 / 25

Birinchi bo’lib gaz molekulalarining harakat tezligini kim aniqlagan?

A) Avogadro

B) L.Bolsman

C) O.Shtern

D) J.Maksvel

20 / 25

Selsiy shkalasining nol nuqtasi nimani bildiradi

A) Suvning kritik temperaturasi

B) Suvning qaynash temperaturasi

C) Suvning qotish temperaturasi

D) Tabiatda bo’lishi mumkin bo'lgan eng past temperatura

21 / 25

Ideal gaz temperaturasi va konsentratsiyasi 2 marta kamaysa, uning bosimi qanday o'zgaradi

A) 2 marta ortadi

B) 2 marta kamayadi

C) 4 marta ortadi

D) 4 marta kamayadi

22 / 25

Metallarni payvandlab ulash qaysi hodisaga asoslangan?

A) Diffuziya

B) Broun harakati

C) Molekulalar orasidagi tortitish kuchi

D) Molekulalarning atomlardan tashkil topishi

23 / 25

O’simlik moyi suyuqlik ustida cheksiz yoyila oladimi

A) Moy qatlami qalinligi eng kichik zarraning kundalang kesimiga tenglashguncha yoyiladi

B) Cheksiz yoyiladi

C) Moy qatlamining qalinligiga bog'liq

D) Cheksiz yoyilmaydi

24 / 25

Universal gaz doimiysining qiymati va o'lchov birligini ko'rsating

A) K=1,38 J/K

B) R=8,31 J/mol K

C) R=8,31*10³ J/mol K

D) P=3,14

25 / 25

Berilgan tenglamalardan qaysi biri izoxorik jarayonni ifodalaydi?

A) pV=const

B) v=m/M

C) p/T=const

D) pT=const

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9-sinf Fizika 3-chorak

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71%-85% 4 baho

56%-70% 3 baho

55% va kamiga 2 baho

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