1 Germetik berk idishda faqat to’yingan suv bug’I bor ( suv yo’q )

1 Germetik berk idishda faqat to’yingan suv bug’I bor ( suv yo’q ). Idish isitilganida suv bug’i molekulalarining konsentratsiyasi qanday o’zgaradi ?.
A) o’zgarmaydi
B) kamayadi
C) ortadi
D) ortishi ham , kamayishi ham mumkin
E) TJY

2 To’yingan bug’ bosimga bog’lanishi qanday ?

A) hajmga qarshi proporsional
B) hajmga bog’liq emas
C) hajmga teskari proparsional
D) hajmning kvadratiga proporsional
E) hajmning kvadratiga teskari proporsional

3 O’zgarmas tempraturada to’yingan bug’ning hajmi 4 marta kamaytirilsa , bosim qanday o’zgaradi ?

A) 2 marta oshadi
B) 2 marta kamayadi
C) o’zgarmaydi
D) 4 marta kamayadi
E) 4 marta oshadi

4 Germetik yopilgan idishda suv va suv bug’i bor Idish istilganda suv bug’i molekulasining konsentratsiyasi qanday o’zgaradi ?

A) o’zgarmaydi
B) kamayadi
C) ortadi
D) 4C dan yuqori haroratda kamayadi , 4 C dan past haroratda ortadi
E) 100 C past haroratda ortadi , 100 C yuqori haroratda kamayadi

5 Bug’lanishga teskari jarayon qaysi javobda berilgan

A) rekambiatsiya
B) dissosiatsiya
C) korroziya
D) sublimatsiya
E) kondetsatsiya

6. 
   Sublimatsiya nima ?
   

A) moddaning suyuq holatdan gaz holatga o’tishi
B) moddaning qattiq holatdan gaz holatiga o’tishi
C) moddaning gaz holatidan gaz holatiga o’tishi
D) moddaning qattiq holatdan suyuq holatga o’tishi
E) moddaning suyuq holatdan qattiq holatga o’tishi
7 Kritik tempratura nima ? bu …..
A) bug’lanish tempraturasi
B) qaynash tempraturasi
C) gazni siqish yo’li bilan suyuqlikka aylantirib bo’lmaydigan eng past tempratura
D) bug’ zichligi suyuqlik zichligidan katta bo’la boshlaydigan tempratura
E) narmal bosimdagi erish tempraturasi

8 Agar 1m kub havoda 15 g suv bug’I bo’lsa , uzunligi 70 m eni 7 m va balandligi 4 m bo’lgan maktab karidorida necha kg suv bug’I bor ?

A) 25
B) 28,6
C) 39,2
D) 29,4
E) 15
9 Birlikning halqaro sistemasida havoning mutloq namligi qanday birlikda o’lchanadi
A) kg/m kub
B) o’lchamsiz
C) K
D) %
E ) Pa

10Ichida namlikni yutuvchi modda bo’lgan naycha orqali 20 l havo o’tkazilgan Bundan naychaning massasi 400g ortadi Havoning absalut namligi qanday (g/m kub)

1. 
   40
   
2. 
   30
   
3. 
   20
   
4. 
   50
   
5. 
   TJY
   

11Suv bug’ining 19C haroratdagi ratsional bosimi 1.1 kPa bo’lsa, havoning nisbiy namligi qanday (%) 19C da to’yingan bug’ bosimi 2,2 kPa

A) 30
B) 40
C) 50
D) 60
E) 70
12 Havoning nisbiy namligi 50% , temperaturasi 16 C bo’lsa ,absalut namlik qanday bo’ladi (kg /m kub) 16 C temperaturada to’yingan bug’ zichligi Pt=13,6-10 kg/m kub
A) 4,8*10 usti-3
B) 6,8*10usti -4
C) 6,8*10 usti -3
D) 1,8*10 usti -2
E) 8,8*10 usti -4

13. 
    Shudring nuqtasi nima
    

A) suv bug’I to’yinishga erishadigan nisbiy namlik
B) suv bug’I to’yinishga erishadigan bosim
C) berilgan bosimdagi suvning qaynash temperaturasi
D) suv bug’ining kritik temperaturasi
E) suv bug’I to’yinishga erishadigan temperaturasi

14 sirt taranglik koiffitsentining birligini ko’rsating . 1)N/M 2)N/m kvadrat 3)J/m 4) J/m kvadrat 5) pa .s

A) 1; 5
B)1
C)2; 3
D)1 ; 3 ;5
E)1; 4
15 Sirt taranglik koiffitsienti qanday birlikda ifodalanadi
A) J.s
B) J/m
C) J/m kvadrat
D) N/m kvadrat
E) N /m

16 Sirt taranglik koiffitsientining birligini ko’rsating

A) N
B) J
C) J/m
D) n/m kvadrat
E) J/m kvadrat

17 Yuk osilganda sim 9 mm cho’zildi Xuddi shunday , lekin 2 marta uzun sim shu yuk osilganda necha mm cho’ziladi

A) 9
B) 18
C) 27
D) 36
E) 81

18 Yuk osilganda prujinani 2 buklab yana shu yuk osilsa , uning nisbiy absalut uzayishi qanday o’zgaradi

A) 2 marta ortadi
B) 4 marta kamayadi
C) o’zgarmaydi
D) 2 marta kamayadi
E) 4 marta ortadi

19 Quyidagi jarayonlarning qaysi birida bararilgan ish nolga teng

A) Izoxorik
B) izotermik
C) adiabatik
D) izobarik
E) izobarik va adiabatik

20 Qaysi jarayonda gaz ish bajarmaydi

A)adiabatic
B) izotermik
C) izoxorik
D) izobarik
E) gaz turiga bog’liq

21 1mol ideal gaz izobarik ravishda 2 K ga isitilganda bajarilgan ishni toping

A) 16.62
B) 8.31
C) 2
D) 1
E) 0

22 2 mol ideal gaz o’zgarmas bosimda 100 C ga qizdirildi Bunda gaz necha joul ish bajargan

A) 16.6
B) 830
C) 83
D) 1660
E) 415

23 16 g geliy gazini izobarik holda 2 K isitishda necha joul ish bajaradi

A) 66.5
B) 33.2
C) 16.6
D) 16
E) 8.31

24 320 gkislorodni 10 K ga izobarik qizdirganda u qanday ish bajaradi

A) 16.62
B) 83.1
C) 640
D) 831
E) 1662

25 160 g kislorodni 5 K ga izobarik qizdirganda u necha joul ish bajaradi

A) 8.31
B) 16.62
C) 104
D) 208
E) 416

26 Kislorod 10 K ga izobarik isitilganda ,831 j ish bajarildi . Kislarodning massasini aniqlang

A) 0.16
B) 0.32
C) 0.64
D) 3.2
E) 32

27 Gazga 200 J issiqlik berildi va tashqi kuchlar gaz ustida 300 J ish bajardi Gaz ichki energiyasining o’zgarishi necha joul bo’ladi

A) 0
B) 100
C) 200
D) 300
E) 500

28 Jismga Q issiqlik miqdori berilgan bo’lsa va tashqi kuchlar uning ustida A ish bajargan bo’lsa ,jismning ichki energiyasi qanchaga o’zgaradi

A) Q
B) A
C) A-Q
D ) Q-A
E) Q+A

29 Gazga 200 J issiqlik miqdori berilganda u kengayib 50 J ish bajardi . Gaz ichki energiyasining o’zgarishi qanday

A) 200
B) 150
C) 75
D) 50
E) 0

30 Gazga 40 kJ issiqlik miqdori berilganda u 60 kJ ish bajardi . Gaz ichki energiyasining o’zgarishini toping

A) +60
B) -60
C) +100
D) +20
E) -20

31 Gaz ustida 7.2 kJ ish bajarildi .Bu jarayonda atrof muhitga 6 kJ issiqlik miqdori uzatildi Gazning ichki energiyasi qanchaga o’zgardi

A) 13.2
B) 7.2
C) 6
D) 1.2
E) 0.6

32 Agar gaz 1000 J issiqlik olib , ichki energiyasini 250 J ga orttirsa , gazning bajargan ishi qanday

A) 0
B) 250
C) 750
D) 1000
E) 1250

33 Gazga 150 J issiqlik miqdori berilganda ichki energiyasi 600 J ortgan bo’lsa , tashqi kuchlar gaz ustida necha joul ish bajargan

A) 0
B) 150
C) 600
D) 450
E) 750

34 Tashqi kuchlar gaz ustida 300 J ish bajardilar . Bunda gazning ichki energiyasi 400 J ortdi . Gazga necha joul issiqlik miqdori berilgan

A) 0
B) 700
C) 400
D) 300
E) 100

35 Gaz izotermik kengayganda 20 J ish bajardi . Gazga qancha issiqlik miqdori berilgan

A) 20
B) 30
C) 40
D) 50
E) 100
36 Ideal gaz izotermik kengayib ,14 kJ ish bajardi . Bunda gazga necha kJ issiqlik miqdori brrilgan
A) 14
B) 16.6
C) 28
D) 8.3
E) gazga issiqlik miqdori berilmagan

37 28 J issiqlik miqdori berilganda ,ideal gaz izotermik kengayib , necha joul ish bajaradi

A) 14
B) 8.3
C) bajarmaydi
D) 28
E) 16.6

38 Gaz bir xil haroratga izoxorik va izobarik qizdirildi . Qaysi holda kam issiqlik sarf bo’ladi

A) izobarik
B) izoxarik
C) ikkala holda bir xil
D) gaz turiga bog’liq
E) TJY.

39 Bir atomli ideal gazni izobarik isitishda unga berilgan Q issiqlik miqdorining qanday qismi gazning ichki energiyasini oshirishga sarflanadi

A) 0.2 Q
B) 0.3Q
C) 0.6 Q
D) 0.5Q
E) 0.4Q

40 Bir atomli gazga 150 J issiqlik berilganda , u o’zgarmas bosimda qanday ish bajara oladi

A) 60
B) 75
C) 100
D) 120
E 150

41 Erkin siljiy oladigan porshenli tik turgan silindrik idishdagi bir atomli gazga 300 J issiqlik miqdori berilsa , gaz necha joul ish bajaradi

A) 300
B) 240
C) 200
D) 120
E) 150

42 Bir atomli gazga 60 kJ issiqlik miqdori b erilganda ,u izobar ravishda kengaydi . Gaz ichki energiyasining o’zgarishini aniqlang

A) 24
B) 30
C) 36
D) 60
E) 0

43 Erkin siljiy oladigan porshenli tik turgan silindrik idishdagi bir atomli gazga 500J issiqlik miqdori berilsa , gazning ichki energiyasi necha joulga ortadi

A) 300
B) 450
C) 500
D) 250
E) 150

44 Ideal issiqlik mashinasining FIK ni kim hisoblagan

A) Bolsman
B) selsiy
C) Kelvin
D) Gey-Lussak
E) Karno

45 Isitgichning harorati 150 C , sovutkichniki 20 C . Ideal issiqlik mashinasining FIK necha foiz

A) 20
B) 23
C) 25
D) 30.7
E) 40

46 Ideal issiqlik mashina isitkichining harorati 117 C , sovutkichniki 27 C . Mashinaning FIKni toping

A) 23
B) 33
C) 70
D) 30
E) 45

47 Ideal issiqlik mashinasi isitkichining harorati sovutkichining haroratidan 4 marta katta bo’lsa ,uning FIK necha foizga teng

A) 80
B) 75
C) 70
D) 60
E) 50

48 Isitkichning harorati 227 C , sovutkichiniki 27 C bo’lgan issiqlik mashinasining maksimal FIK necha foiz

A) 20
B) 30
C) 40
D) 45
E) 60

49 Isitkichning harorati 500 K bo’lgan issiqlik mashinasining FIK 50 % . Sovutkichning harorati qanday

A) 190
B) 200
C) 230
D) 240
E) 250

50 5.4 MJ issiqlik miqdorini hosil qilish uchun necha gramm spirt yoqish kerak ? Spirtning solishtirma yonish issiqligi 2.7*10 usti 7 J/kg

A) 2
B) 20
C) 27
D) 54
E) 200

1 Vakuumdagi uzinligi 0.75 yorug’likning chastotasini yoping

A) 4*10 usti 15
B) 7.5*10 usti 15
C) 7.2*10 usti 14
D) 5*10 usti 15
E) 4*10 usti 14

2 0.75 mm uzunlikda chastotasi 4.10 usti 14 Hz bo’lgan qizil nurlanishning nechta to’lqin uzunligi joylashadi

A) 400
B) 750
C) 1000
D) 1500
E) 3000

3 Ko’zgu bilan tushayotgan nur orasidagi burchak 35 C ga teng . Yorug’likning qaytish burchagini aniqlang

A) 35 C
B) 70 C
C) 50 C
D) 55 C
E) 25 C

4 O’zaro 30 C burchak ostida joylashtirilgan ikkita ko’zguning biriga yorug’lik nuri tushmoqda . Bunda ikkala ko’zgudan qaytgan nur bilan tushgan nur orasidagi burchak qanday bo’ladi ?

A) 90 C
B) 60 C
C) 45 C
D) 30 C
E) 15 C

5 Agar olmosda chastotasi 2.73*10 usti 14 Hz bo’lgan yorug’likning to’lqin uzunligi 450 mm bo’lsa , yorug’likning olmosdagi tezligi qanday (m/s) bo’ladi

A) 1.23*10 usti 8
B) 2.23*10 usti 8
C) 2.5*10 usti 8
D) 1.5*10 usti 8
E) 2.83*10 usti 8

6 Radiolokator 1 s da 2000 impuls yuboradi . Radiolokator mo’ljallangan o’lchash uzoqligi qanday

A) 30
B) 150
C) 75
D) 3000
E) 150

7 Agaryorug’lik nuri bir muhitdan ikkinchi muhitga o’tganda sinish burchagi 30 C bo’lib , u tushish burchagidan ikki marta kichik bo’lsa , ikkinchi muhitning birinchi muhitga nisbatan sindirish ko’rsatkichi qanday

A) 1
B) ildiz osti 2
C) ildiz osti 3
D) 1.5
E) 3

8 yorug’lik nuri havodan turmalinning yassi sirtiga tushganda , qaytgan va singan nurlar orasidagi burchak tushish burchagidan 1.5 marta katta bo’ldi . Agar tushish burchagi 60 C bo’lsa , sinish qanday bo’ladi ?

A) 90 C
B) 60 C
C) 45 C
D) 30 C
E) 0 C

9 Nir havodan shisha sirtiga 45 C burchak ostida tushsa , sinish burchagi necha gradus bo’ladi ? Shisha uchun n=1.41

A) 25 C
B) 21 C
C) 30 C
D) 37 C
E) 42 C
10 Tushish burchagi sinish burchagiga teng bo;lishi mumkinmi ?
A) tushish burchagiga bog;liq
B) tushish burchagi va sinish ko’rsatkichiga bog’lik
C) mumkin emas
D) har doim teng
E) TJY

11 Havodan suvga o’tishda yorug’lik nuri a burchakka ogdi . Suv ustiga moy qatlami quyilsa bu ( ya’ni havo va suvdagi nurlar orasidagi ) burchak qanday bo’ladi ?

A) 90 C
B ) 2a
C) a
D) a/2
E) 0

12 Singan nur qaytgan nurga tik bo’lishi uchun nur sindirish ko’rsatgichi p=1.732 bo’lgan shishaga qanday burchak ostida tushishi kerak ?

A) 30 C
B) 35 C 16’
C) 45 C
D) 60 C
E) TJY

13 Singan nur qaytgan nurga tik bo’lishi uchun nur yassi shishaga qanday burchak ostida tushishi kerak ? Shishaning sindirish ko’rsatgichi n.

A) arscos n
B) arcsin n
C) 0
D) arcctg n
E) arctg n

14 Yorug’lik nuri suyuqlikdan vakuumga o’tmoqda . Tushish burchagi 30 c . Qaytgan va singan nurlar bir - biriga tik . Bu suyuqlikning sindirish ko’rsatkichi qanday ?

A) 1.3
B) 1.5
C) 1.73
D) 2
E) 2.5

15 Yorug’lik nuri sindirish ko’rsatkichi 1.73 bo’lgan shishadan havoga o’tmoqda . Sinish burchagi tushish burchagidan 2 marta katta bo’lishi uchun yorug’lik havoga qanday burchak ostida tushishi kerak ?

A) 25 C
B) 30 C
C) 45 C
D) 60 C
E) TJY

16 Singan nur qaytgan nur bilan 90 C burchak tashkil etadi . Agar tushish burchagi a ning sinusi 0.8 ga teng bo’lsa , sindirish ko’rsatkichi qanday ?

A) 1
B) 1.25
C) 1.33
D) 1.5
E) 1.8

17 Absolut sindirish ko’rsatkichi 1.4 bo’lgan muhitga yorug’lik qanday tezlik bilan tarqaladi ?

A) 0.21 c
B) 0.14 c
C) 0.7 c
D) c
E) 0.07 c

18 Binafsha yorug’lik uchun suvning sundirish ko’rsatkichi 1.343 . Bu yorug’lik to’lqinining suvda tarqalishi tezligini toping ?

A) 300000
B) 253333.3
C) 299792.458
D) 223380
E) TJY

19 Suvning sindirish ko’rsatkichi 1.33 ga teng . Yorug’likning suvdagi tezligini toping (m/s) .

A) 2.25*10 USTI 8
B) 3*10 USTI 8
C) 1.5*10 USTI 8
D) 3.98*10 USTI 8
E) 2*10 USTI 8

20 Suvning sindirish ko’rsatkichi 1.33; shishaniki 1.5 . Shishaning suvga nisbatan sindirish ko’rsatkichini toping ?

A) 1.13
B) 1.25
C) 1.33
D) 1.5
E) 1.415

21 Nurning shaffof muhitdagi tezligi 0.66 c ga teng . Muhiyning absalut sindirish ko’rsatkichini aniqlang . c - yorug’likning vakuumdagi tezligi .

A) 1.33
B) 1.5
C) 1.66
D) 2
E) 2.3

22 Yorug’lik tezligi 0.625 c ga teng bo’lgan muhitning absalut sindirish ko’rsatkichini toping . c - yorug’likning vakuumdagi tezligi

A) 2
B) 1.8
C) 1.7
D) 1.6
E) 1.5

23 Agar bir jinsli muhitda tarqalayotgan elektromagnit to’lqin chastotasi 10 usti 15 Hz , to’lqin uzunligi 225 nm bo’lsa , muhitning sindirish ko’rsatkichi qanday

A) 1.33
B) 1.5
C) 1.7
D) 2
E) 2.25

24 Agar muhitda tarqalayotgan yorug’likning chastotasi 3*10 usti 14 Hz , to’lqin uzunligi 500 nm bo’lsa , muhitning sindirish ko’rsatkichi qanday?

A) 2
B) 1.7
C) 1.6
D) 1.5
E) 1.33

25 Shaffof muhitdagi yorug’lik chastotasi 4*10 usti 14 Hz , to’lqin uzunligi 500 nm bo’lsa , muhitning sindirish ko’rsatkichi qanday ?

A) 1.33
B) 1.5
C) 1.7
D) 2
E) 2.25

26 Muhitda yorug’likning to’lqin uzunligi 400 nm , chastotasi 5*10 usti 14 Hz bo’lsa , shu muhitning sindirish ko’rsatkichi qanday ?

A) 1.7
B) 1.6
C) 1.3
D) 1.4
E) 1.5

27 Shishada tarqalayotgan elektromagnit to’lqinning chastotasi 3*10 usti 14 Hz , to’lqinning uzunligi 625 nm . Shishaning sindirish ko’rsatkichini aniqlang

A) 2
B) 1.8
C) 1.7
D) 1.6
E) 1.5

28 Agar yoruglik qandaydir vaqt davomida bo’shliqda 45 cm masofa o’tsa , bu suyuqlikda esa shunday vaqtda 30cm masofa o’tsa , bu suyuqlikning sindirish ko’rsatkichi nimaga teng ?

A) 1.2
B) 1.3
C) 1.4
D) 1.5
E) 1.7

29 Suvning sindirish ko’ratkichi n1=1.33 , skipidarniki n2=1.49 . Shu moddalardan yorug’lik nuri bir xil vaqtda o’tadigan masofalar nisbati qanday ?

A) 1.22
B) 1.21
C) 1.20
D) 1.12
E) TJY.

30 Ko’rinuvchi yorug’lik to’lqinining chastotasi 4*10 usti 14/7.5*10usti 14 Hz oraliqda yotadi . Shu to’lqinlarning uzunligi qanday oraliqda yotadi (nm)

A) 400/700
B) 450/700
C) 500/700
D) 400/750
E) 400/800

31 Chastotasi 3*10 usti 14 Hz bo’lgan yorug’likning sindirish ko’rsatkichi 2 ga teng bo’lgan muhitdagi to’lqin uzunligini aniqlang (nm)

A) 200
B) 400
C) 450
D) 500
E) 600

32 Shishada tarqalayotgan , chastotasi 5*10usti 14 Hzbo’lgan elektromagnit to’lqinning uzunligini tping . (nm) Shishaning sindirish ko’rsatkichi 1.5 ga teng

A) 200
B) 300
C) 400
D) 500
E) 750
33 Havodagi uzunligi 720 nm bolgan yorug’lik to’lqining olmosdagi uzunligi qanday (nm) Yorug’likning olmosdagi tezligi 1.25*10 usti 8m/s
A) 250
B) 300
C) 360
D) 576
E) 900

34 Yorug’lik to’lqining havodagi uzunligi 0.6 um . uning suvdagi to’lqin uzunligi necha um bo’ladi ? Suvning sindirish ko’rsatkichi n=4/3

A) 0.80
B) 0.64
C) 0.60
D) 050
E) 0.45

35 Havodagi uzunligi 450 nm bo’lgan yorug’lik to’lqining shishadagi uzunligi qanday (nm) ? Shishaning sindirish ko’rsatkichi 1.5 ga teng .

A) 150
B) 675
C) 300
D) 250
E) 200

36 Chastotasi 5*10 usti 14 Hz bo’lgan yorug’likning sindirish ko’rsatkichi 1.5 bo’lgan muhitdagi to’lqin uzunligini aniqlang(nm)

A) 300
B) 400
C) 500
D) 600
E) 750

37 Yorug’lik to’lqini bir muhitdan boshqasiga o’tmaqda . unga tegishli qaysi kattaliklar o’zgarmaydi 1) to’lqin uzunligi 2) chastotasi 3) tarqalish tezligi

4) amplitude ?
A) faqat 2
B) 2 ,4
C) 2 3 4
D) 1 4
E) 4

38 Agar 600nm to’lqin uzunlikdagi yorug’lik vakuumdan biror muhitga o’tganda , tezligi 40% ga kamaygan bo’lsa , yorug’likning shu muhitdagito’lqin uzunligi qanday

A) 240
B) 360
C) 750
D) 1000
E) 1500

39 Agar eletromagnit tebranishlar chastotasi vakuumda 1 MHz bo’lsa , sindirish ko’rsatkichi 2 ga teng bo’lgan bir jinsli muhitda chastotasi necha MHz bo’ladi

A) 0.2
B) 0.5
C) 0.8
D) 1
E) 2

40 Yorug’lik sindirish ko’rsatkichi n2 bo’lgan muhitdan sindirish ko’rsatkichi n1 bo’lgan muhitga o’tishida to’la ichki qaytishning chegaraviy burchagi a qaysi ifodadan aniqlanadi ?

A) sina=1/n2
B) sin=1/n2
C) sina=n2/n1
D) sina=n1/n2
E) TJY

41 Qanday muhitda yorug’lik nurlari egri chiziq bo’lishi mumkin ?

A) 1 jinsli mihitda
B) suyuq muhitda
C) monokristallda
D) amorf moddada
E) sindirish ko’rsatkichi nuqtadan nuqtaga o’zgaruvchi muhitda

42 Qavariq linzaning focus masofasi linza sirtlarining egrilik radiusiga teng bo’lsa , linza materialining sindirish ko’rsatkichi qanday ?

A) 1.5
B) 1.4
C) 1.45
D) 1.3
E) 1.55

43 Nurtolalarning ish prinsipi nimaga asoslangan ?

A) yorug’lik difraksiyasiga
B) yorug’lik despersiyasiga
C) yorug’likning sinishiga
D) yorug’lik interferensiyasiga
E) to’la ichki qaytish hodisasiga

44 Yorug’lik vakuumdagi to’la ichki qaytish chegaraviy burchagi 30’ bo’lgan muhitga o’tganda , to’lqin uzunligi necha marta kamayadi ?

A) 2
B) 1.5
C) 2
D) 3
E) O’ZGARAYDI

45 Nuqtaviy yorug’lik manbai sindirish ko’rsatkichi 2.24 bo’lgan suyuqlik sirtidan 1 m chuqurlikda joylashgan . Nurlar suyuqlik sirtidan qanday diametrli doira orqali chiqadi (m)

A) 0
B) &
C) 0.5
D) 0.25
E) 1

46 Sindirish ko’rsatkichi 1.5 ga teng bo’lgan muhitdagi elektromagnit to’lqinlarning tezligini aniqlang

A) 2*10USTI 8
B) 1.5*10 USTI 7
C) 1.5*10 USTI 8
D) 5*10 USTI 7
E) 6.7*10 USTI 7

47 Elektromagnit to’lqinlarning suvda tarqalish tezligi (m/s) nimaga teng ? Suvning absalit sindirsh ko’rsatkichi n=1.3

A) 3.9*10 USTI 7
B) 4.3*10 USTI 7
C) 3*10 USTI 8
D) 1.1*10 USTI 7
E) 2.3*10 USTI 8

48 Yorug’likning qandaydir shaffof muhitdagi tezligi 1.5*10 usti 8 m/s bo’lsa , shu muhitning dielektrik singdiruvchanligi qanday ?

A) 1.5
B) 2
C) 3
D) 4
E) 8

49 Kerosinning dielektrik singdiruvchanligi 2, magnet kirituvchanligi 1 bo’lsa , absalut sindirish ko’rsatkichi qanday ?

A) 1
B) 1.5
C) 2
D) 2 ildiz osti 2
E) ildiz osti 2

50 To’lqin uzunligi 5*10 usti -7 m bo’lgan yorug’likning tebranish chastotasi necha gersga teng

A) 6*10 usti 15
B) 0.6*10 usti 15
C) 6*10 usti 12
D) 6*10 usti 13
E) 0.6*10 usti 14