The correct answer is: 7,2
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Correct Mark 1.00 out of 1.00 Flag question Question text Agar quyoshdan yergacha masofa 150 million km bo’lsa, yorug’lik yerga qancha vaqtda yetib keladi? Select one: a. 320 sekend b. 2 soat c. 14 min, 12 s d. 8 min, 20 sek Feedback The correct answer is: 8 min, 20 sek Question 17 Incorrect Mark 0.00 out of 1.00 Flag question Question text Halqa shaklidagi o’tkazgichning diometrial qarama-qarshi nuqtalarida to’klar qanday yo’nalgan bo’ladi. Select one: a. qarama qarashi b. o’zaro 120 gradus burchak ostida c. tik
d. parallel Feedback
The correct answer is: qarama qarashi Question 18 Correct Mark 1.00 out of 1.00 Flag question Question text Kimning tajribasi natijasida atomni Yadroviy ya’ni Planetar modelitaklif qilindi? Select one: a. J.Tomson b. Frank-Gers c. P.Lebedev d. Rezerford Feedback The correct answer is: Rezerford Question 19 Correct
Mark 1.00 out of 1.00 Flag question Question text Yorug’lik nuri glitserindan suvga o’tmoqda. Agar tushish burchagi 30 gradus bo’lsa, nurning sinish burchagi 45 gradus bo’lsa. Glitserinni nur sindirish ko’rsatkichini aniqlang. Suv uchun n=1,33 Select one: a. 1,87
b. 1,72 c. 1,46
d. 1,5 Feedback
The correct answer is: 1,87 Question 20 Correct Mark 1.00 out of 1.00 Flag question Question text Yoruqlik kuchi 25 kd bo’lgan tuqtaviy yorug’lik manbayi 0,64 str li fazoviy burchak ichida qancha yoruqlik oqimi (lm) tarqatadi? Select one: a. 16 b. 3
c. 8 d. 25
Feedback The correct answer is: 16 Question 21 Correct
Mark 1.00 out of 1.00 Flag question Question text Yig’uvchi linza bosh fokusiga nuqtaviy yorug’lik manbayi joylashtirilgan. Agar linzaning boshqa tomonida uning optika oqiga perpendicular ravishda yassi kozgu jipislashtirib ornatilsa, manba tasviri qayerda hozil bo’ladi va u qanday bo’ladi? Select one: a. F da, haqiqiy b. 2Fda, mavhum c. F va 2F orasida, haqiqiy d. 3F da, mavhum Feedback
The correct answer is: F da, haqiqiy Question 22 Correct Mark 1.00 out of 1.00 Flag question Question text 20 A tok o’tayotgan 30 s m diometrli halqaning magnit momentini aniqlang (A*m2) ? Select one: a. 1,4 b. 2,48
c. 4,2 d. 3,6
Feedback The correct answer is: 1,4 Question 23 Incorrect Mark 0.00 out of 1.00 Flag question Question text Buyum ko’zgudan 16 sm masofada bo’lganda egrilik radiusi 64 sm bo’lgan botiq sverik ko’zguda ta’svir necha marta kattalashadi? Select one: a. 1,2
b. 2 c. 1,5
d. 2,5 Feedback
The correct answer is: 2 Question 24 Correct Mark 1.00 out of 1.00 Flag question Question text Buyum yig’uvchi linzadan F va 2F oralig’iga joylashtirilsa, buyum tasviri qayerda hosil bo’ladi. Select one: a. linza va F oralig’ida b. F
c. 2F dan uzoqda d. 2F
Feedback The correct answer is: 2F dan uzoqda Question 25 Correct
Mark 1.00 out of 1.00 Flag question Question text 1 mkF sig’imli kondensator va 3000 Om aktiv qarshilikli reostat 50 Gs chastotali o’zgaruvchan tok zanjiriga ulandi. Agar ular parallel ulansa to’la qarshiligi qancha bo’ladi. Select one: a. 2180
b. 2420 c. 1840
d. 1275 Feedback
The correct answer is: 2180 Question 26 Correct Mark 1.00 out of 1.00 Flag question Question text Kinetik energiyasi 20 keV bo’lgan electron bir jinsli magnit maydonda 20 sm radiusli aylana bo’ylab harakatlanayotgan bo’lsa, maydon induksiyasini toping (mTl). Select one: a. 8,5 b. 22
c. 2,4 d. 18
Feedback The correct answer is: 2,4 Question 27 Correct
Mark 1.00 out of 1.00 Flag question Question text Past chastotali tokning oniy qiymati I=0,564 sin12,56 t (A) qonun bo’yicha o’zgaradi. 10 davrga teng vaqt davomida 15 Om aktiv qarshilikli o’tqazgichda qancha issiqlik miqdori (J) ajraladi? Select one: a. 12
b. 43 c. 21
d. 38 Feedback
The correct answer is: 12 Question 28 Incorrect Mark 0.00 out of 1.00 Flag question Question text Egrilik radiusi 7,5 m linza yassi plastinka ustiga qo’yilgan bo’lib, u linzaning bosh optik o’qiga parallel tushuvchi 450 nm to’lqin uzunlikli yoruqlik bilan yoritiladi. Bunda qaytgan nurdan hosil bo’lgan 2 chi qorong’u Nyuton halqasi radiusni (mm) aniqlang. Agar linzani n=1,5 ga teng. Select one: a. 2,7 b. 3
c. 2,4 d. 1,5
Feedback The correct answer is: 1,5 Question 29 Correct
Mark 1.00 out of 1.00 Flag question Question text Agar vodorod atomlarida electron uchinchi tartibli oribitada bo’lsa, vodorod atomlari turli energiyali qancha kvan chiqarishi mumkin? Select one: a. 3 ta
b. 4 ta c. 6 ta
d. 5 ta Feedback
The correct answer is: 3 ta Question 30 Correct Mark 1.00 out of 1.00 Flag question Question text 2 mkF sig’imda 1000 Gs tovush chastotasini olish uchun tebranish konturiga qanday induktivlik (mGn) ulash kerak? Select one: a. 25,56 b. 6,28
c. 12,7 d. 34,1
Feedback The correct answer is: 12,7 Yorog’lik absalyut oq jismga tushganda, absalyut qora jismga tushgandagiga nisbatan ko’p bosim beradi? Select one: a. 4 b. 16
c. 2 d. 10
Feedback The correct answer is: 2 Question 2 Incorrect Mark 0.00 out of 1.00 Flag question Question text Nima sababdan gulxan oldida o’tirganimizda gulxanning narigi tomonidagi buyumlar tebranib ( chimirlab) ko’rinadi? Select one: a. gulxan ta’sirida molekulalar harakatlanganligi uchun b. gulxan nurni qaytarganligi uchun c. gulxan tepasidagi havoni sindirish korsatkichi o’zgarganligi uchun d. gulxan tufayli yorug’lik tezlashganligi uchun Feedback
The correct answer is: gulxan tepasidagi havoni sindirish korsatkichi o’zgarganligi uchun Question 3 Correct Mark 1.00 out of 1.00 Flag question Question text Yorug’likni yo’lida uchragan shaffofmas to’siqni aylanib o’tishi yoki geomertik soya sohasiga kirib boorish hodisasi nima deb ataladi? Select one: a. Dispersiya b. Interferensiya c. Qutublanish d. Difraksiya Feedback The correct answer is: Difraksiya Question 4 Correct
Mark 1.00 out of 1.00 Flag question Question text Massasi elektron massasiga teng bo’lgan foton energiyasini (MeV) toping? Select one: a. 34
b. 51,2 c. 49,3
d. 12,8 Feedback
The correct answer is: 51,2 Question 5 Correct Mark 1.00 out of 1.00 Flag question Question text Nur sindirish ko’rsatkichi 1,73 bo’lgan shishadan suvga o’tayotgan xol uchun to’la qutblanish burchagi nimaga teng bo’ladi? Select one: a. 30 gradus b. 25 gradus c. 42 gradus d. 40 gradus Feedback The correct answer is: 30 gradus Question 6 Correct
Mark 1.00 out of 1.00 Flag question Question text Fazoda kuch chiziqlari yopiq elektr maydon bo’lishi mumkinmi. Select one: a. Ha, bu maydonni o’zgarmas magnit maydon hosil qilgan bo’lsa b. kuch chiziqlarini yopiq bo’lishligi magnit maydonga bog’liq emas c. yo’q
d. Ha, bu maydonni o’zgaruvchan magnit maydon hosil qilgan bo’lsa Feedback
The correct answer is: Ha, bu maydonni o’zgaruvchan magnit maydon hosil qilgan bo’lsa Question 7 Correct Mark 1.00 out of 1.00 Flag question Question text Tokli o’tkazgichlar atrofida magnit maydon hosil bo’lishligini birinchi bo’lib kim aniqlagan? Select one: a. M.Faradey b. A.Papov c. Erestet d. I.Nyuton Feedback The correct answer is: Erestet Question 8 Correct
Mark 1.00 out of 1.00 Flag question Question text Yorug’lik tasirida jism sirtidan elektronlarni ajralib chiqish hodisasiga nima deb ataladi? Select one: a. Qutublanish b. Dispersiya c. Difraksiya d. Fotoeffekt Feedback
The correct answer is: Fotoeffekt Question 9 Correct Mark 1.00 out of 1.00 Flag question Question text 1 mm 125 shtrixi bo’lgan difraksion panjarada ekrangacha masofa 2,5 m teng. Panjara 420 nm to’lqin uzunlikli yorug’lik bilan yoritilganda ekranda ko’k chiziqlar ko’rinadi. Ekrandagi markazi chiziqdan birinchi chiziqqacha masofani (sm) aniqlang. Select one: a. 13 b. 9
c. 17 d. 22
Feedback The correct answer is: 13 Question 10 Correct
Mark 1.00 out of 1.00 Flag question Question text Yorug’lik to’lqini ko’ndalang to’lqin ekanligini tasdiqlovchi hodisa qaysi? Select one: a. Dispersiya b. Qutublanish c. Interferensiya d. Difraksiya Feedback
The correct answer is: Qutublanish Question 11 Incorrect Mark 0.00 out of 1.00 Flag question Question text Qanday o’zgaruvchan tok sistemasi uch fazali tok deb ataladi? Select one: a. boshlang’ich fazalari bir biriga nisbatan 1/8 davr siljigan, har xil chastotali uchta EYUK ta’sir etuvchi o’zgaruvchan tok sanjiri b. boshlang’ich fazalari bir biriga nisbatan 1/3 davr siljigan, bir xil chastotali uchta EYUK ta’sir etuvchi o’zgaruvchan tok sanjiri c. boshlang’ich fazalari bir biriga nisbatan 1/8 davr siljigan, bir xil chastotali uchta EYUK ta’sir etuvchi o’zgaruvchan tok sanjiri d. boshlang’ich fazalari bir biriga nisbatan 1/3 davr siljigan, har xil chastotali uchta EYUK ta’sir etuvchi o’zgaruvchan tok sanjiri Feedback The correct answer is: boshlang’ich fazalari bir biriga nisbatan 1/3 davr siljigan, bir xil chastotali uchta EYUK ta’sir etuvchi o’zgaruvchan tok sanjiri Question 12 Correct
Mark 1.00 out of 1.00 Flag question Question text Yupqa linzaning optik kuchi 5,0 Dptr ga teng. Buyum linzadan 60 sm masofada joylashgan. Buyumning ta’sviri qayerda hosil bo’ladi va u qanday ta’svir bo’ladi? Select one: a. f=20sm; tasvir mavhum, to’g’ri va kattalashgan b. f=30sm; tasvir haqiqiy, to’nkarilgan va kichraygan c. f=30sm; tasvir haqiqiy, to’g’ri va kichraygan d. f=20sm; tasvir mavhum, to’g’ri va kichraygan Feedback
The correct answer is: f=30sm; tasvir haqiqiy, to’nkarilgan va kichraygan Question 13 Correct Mark 1.00 out of 1.00 Flag question Question text 1,5 MGs chastotada ishlayotgan radiostansiya tolqinining tolqin uzunligi (m) qanchaga teng? Select one: a. 200 b. 280
c. 300 d. 120
Feedback The correct answer is: 200 Question 14 Incorrect Mark 0.00 out of 1.00 Flag question Question text Agar o’zaksiz galtak o’ramlari sonini uning chiziqli o’lchamlariga ta’sir qilmasdan 2 barobar orttirilsa, induktivligi necha martta o’zgaradi. Select one: a. 2 martta kamayadi b. 2 martta ortadi c. 4 martta ortadi d. 4 martta kamayadi Feedback
The correct answer is: 4 martta ortadi Question 15 Correct Mark 1.00 out of 1.00 Flag question Question text Stol o’rtasidan 1,2 m balandlikda lampa osilgan. Stol sirtining diametri 1,2 ga teng. Agar lampaning to’la yorug’lik oqimi 750 lm bo’lsa stol chekkalarining yoritilganligi (lk) qanchaga teng? Select one: a. 80 b. 30
c. 26 d. 65
Feedback The correct answer is: 30 Question 16 Correct
Mark 1.00 out of 1.00 Flag question Question text Agar quyoshdan yergacha masofa 150 million km bo’lsa, yorug’lik yerga qancha vaqtda yetib keladi? Select one: a. 320 sekend b. 2 soat c. 14 min, 12 s d. 8 min, 20 sek Feedback
The correct answer is: 8 min, 20 sek Question 17 Incorrect Mark 0.00 out of 1.00 Flag question Question text Halqa shaklidagi o’tkazgichning diometrial qarama-qarshi nuqtalarida to’klar qanday yo’nalgan bo’ladi. Select one: a. qarama qarashi b. o’zaro 120 gradus burchak ostida c. tik d. parallel Feedback The correct answer is: qarama qarashi Question 18 Correct
Mark 1.00 out of 1.00 Flag question Question text Kimning tajribasi natijasida atomni Yadroviy ya’ni Planetar modelitaklif qilindi? Select one: a. J.Tomson b. Frank-Gers c. P.Lebedev d. Rezerford Feedback
The correct answer is: Rezerford Question 19 Correct Mark 1.00 out of 1.00 Flag question Question text Yorug’lik nuri glitserindan suvga o’tmoqda. Agar tushish burchagi 30 gradus bo’lsa, nurning sinish burchagi 45 gradus bo’lsa. Glitserinni nur sindirish ko’rsatkichini aniqlang. Suv uchun n=1,33 Select one: a. 1,87 b. 1,72
c. 1,46 d. 1,5
Feedback The correct answer is: 1,87 Question 20 Correct
Mark 1.00 out of 1.00 Flag question Question text Yoruqlik kuchi 25 kd bo’lgan tuqtaviy yorug’lik manbayi 0,64 str li fazoviy burchak ichida qancha yoruqlik oqimi (lm) tarqatadi? Select one: a. 16
b. 3 c. 8
d. 25 Feedback
The correct answer is: 16 Question 21 Correct Mark 1.00 out of 1.00 Flag question Question text Yig’uvchi linza bosh fokusiga nuqtaviy yorug’lik manbayi joylashtirilgan. Agar linzaning boshqa tomonida uning optika oqiga perpendicular ravishda yassi kozgu jipislashtirib ornatilsa, manba tasviri qayerda hozil bo’ladi va u qanday bo’ladi? Select one: a. F da, haqiqiy b. 2Fda, mavhum c. F va 2F orasida, haqiqiy d. 3F da, mavhum Feedback The correct answer is: F da, haqiqiy Question 22 Correct
Mark 1.00 out of 1.00 Flag question Question text 20 A tok o’tayotgan 30 s m diometrli halqaning magnit momentini aniqlang (A*m2) ? Select one: a. 1,4
b. 2,48 c. 4,2
d. 3,6 Feedback
The correct answer is: 1,4 Question 23 Incorrect Mark 0.00 out of 1.00 Flag question Question text Buyum ko’zgudan 16 sm masofada bo’lganda egrilik radiusi 64 sm bo’lgan botiq sverik ko’zguda ta’svir necha marta kattalashadi? Select one: a. 1,2 b. 2
c. 1,5 d. 2,5
Feedback The correct answer is: 2 Question 24 Correct
Mark 1.00 out of 1.00 Flag question Question text Buyum yig’uvchi linzadan F va 2F oralig’iga joylashtirilsa, buyum tasviri qayerda hosil bo’ladi. Select one: a. linza va F oralig’ida b. F c. 2F dan uzoqda d. 2F Feedback
The correct answer is: 2F dan uzoqda Question 25 Correct Mark 1.00 out of 1.00 Flag question Question text 1 mkF sig’imli kondensator va 3000 Om aktiv qarshilikli reostat 50 Gs chastotali o’zgaruvchan tok zanjiriga ulandi. Agar ular parallel ulansa to’la qarshiligi qancha bo’ladi. Select one: a. 2180 b. 2420
c. 1840 d. 1275
Feedback The correct answer is: 2180 Question 26 Correct
Mark 1.00 out of 1.00 Flag question Question text Kinetik energiyasi 20 keV bo’lgan electron bir jinsli magnit maydonda 20 sm radiusli aylana bo’ylab harakatlanayotgan bo’lsa, maydon induksiyasini toping (mTl). Select one: a. 8,5
b. 22 c. 2,4
d. 18 Feedback
The correct answer is: 2,4 Question 27 Correct Mark 1.00 out of 1.00 Flag question Question text Past chastotali tokning oniy qiymati I=0,564 sin12,56 t (A) qonun bo’yicha o’zgaradi. 10 davrga teng vaqt davomida 15 Om aktiv qarshilikli o’tqazgichda qancha issiqlik miqdori (J) ajraladi? Select one: a. 12 b. 43
c. 21 d. 38
Feedback The correct answer is: 12 Question 28 Incorrect Mark 0.00 out of 1.00 Flag question Question text Egrilik radiusi 7,5 m linza yassi plastinka ustiga qo’yilgan bo’lib, u linzaning bosh optik o’qiga parallel tushuvchi 450 nm to’lqin uzunlikli yoruqlik bilan yoritiladi. Bunda qaytgan nurdan hosil bo’lgan 2 chi qorong’u Nyuton halqasi radiusni (mm) aniqlang. Agar linzani n=1,5 ga teng. Select one: a. 2,7
b. 3 c. 2,4
d. 1,5 Feedback
The correct answer is: 1,5 Question 29 Correct Mark 1.00 out of 1.00 Flag question Question text Agar vodorod atomlarida electron uchinchi tartibli oribitada bo’lsa, vodorod atomlari turli energiyali qancha kvan chiqarishi mumkin? Select one: a. 3 ta b. 4 ta
c. 6 ta d. 5 ta
Feedback The correct answer is: 3 ta Question 30 Correct
Mark 1.00 out of 1.00 Flag question Question text 2 mkF sig’imda 1000 Gs tovush chastotasini olish uchun tebranish konturiga qanday induktivlik (mGn) ulash kerak? Select one: a. 25,56
b. 6,28 c. 12,7
d. 34,1 Feedback
The correct answer is: 12,7 G’altak induktivligi 1,4 mGn, undan o’tayotgan tok kuchi 40 A bo’lsa, g’altakda hosil bo’lgan magnit maydon energiyasi (J) qancha bo’ladi? Select one: a. 1,56
b. 2,24 c. 2,8
d. 1,76 Feedback
The correct answer is: 2,24 Question 2 Correct Mark 1.00 out of 1.00 Flag question Question text Qanday o’zgaruvchan tok sistemasi uch fazali tok deb ataladi? Select one: a. boshlang’ich fazalari bir biriga nisbatan 1/3 davr siljigan, har xil chastotali uchta EYUK ta’sir etuvchi o’zgaruvchan tok sanjiri b. boshlang’ich fazalari bir biriga nisbatan 1/8 davr siljigan, bir xil chastotali uchta EYUK ta’sir etuvchi o’zgaruvchan tok sanjiri c. boshlang’ich fazalari bir biriga nisbatan 1/8 davr siljigan, har xil chastotali uchta EYUK ta’sir etuvchi o’zgaruvchan tok sanjiri d. boshlang’ich fazalari bir biriga nisbatan 1/3 davr siljigan, bir xil chastotali uchta EYUK ta’sir etuvchi o’zgaruvchan tok sanjiri Feedback The correct answer is: boshlang’ich fazalari bir biriga nisbatan 1/3 davr siljigan, bir xil chastotali uchta EYUK ta’sir etuvchi o’zgaruvchan tok sanjiri Question 3 Correct
Mark 1.00 out of 1.00 Flag question Question text Ko’l sohilida tinch turgan kuzatuvchinig oldidan 6 s ichida 4 to’lqin do’ngligi o’tdi. Birinchi va uchunchi do’ngliklar orasidagi masofa 12 m bo’lsa, suv zarralarini tebranish davrini (s) toping? Select one: a. 2
b. 2,8 c. 3,2
d. 3 Feedback
The correct answer is: 2 Question 4 Correct Mark 1.00 out of 1.00 Flag question Question text Past chastotali tokning oniy qiymati I=0,564 sin12,56 t (A) qonun bo’yicha o’zgaradi. 10 davrga teng vaqt davomida 15 Om aktiv qarshilikli o’tqazgichda qancha issiqlik miqdori (J) ajraladi? Select one: a. 21 b. 43
c. 12 d. 38
Feedback The correct answer is: 12 Question 5 Correct
Mark 1.00 out of 1.00 Flag question Question text Magnit maydon qanday o’zgarganda fazoda uyurmaviy maydon hosil bo’ladi? Select one: a. tekis o’zgarsa b. har doim c. tezlanuvchan ortsa d. sekinlanuvchan kamaysa Feedback
The correct answer is: tekis o’zgarsa Question 6 Correct Mark 1.00 out of 1.00 Flag question Question text Linyadagi yo’qolishlarni n marta kamaytirish uchun manbaning kuchlanishi necha marta o’zgarishi kerak? Generator beradigan quvvat o’zgarmas deb hisoblang. Select one: a. n martta kamayishi b. √n martta kamayishi c. √n marta ortishi d. n marta ortishi Feedback The correct answer is: √n marta ortishi Question 7 Correct
Mark 1.00 out of 1.00 Flag question Question text Chuqurligi 1,5 m bo’lgan suv xavzasi tubidagi qoziq qoqilgan bo’lib, u suv sirtida 30 sm chiqib turibdi. Quyosh nurlari 45 gradus burchak ostida tushayotgan bo’lsa, havza tubidagi qoziq soyasining uzunligini (sm) aniqlang. Select one: a. 124
b. 136 c. 108
d. 140 Feedback
The correct answer is: 124 Question 8 Correct Mark 1.00 out of 1.00 Flag question Question text Yorug’lik tasirida jism sirtidan elektronlarni ajralib chiqish hodisasiga nima deb ataladi? Select one: a. Difraksiya b. Dispersiya c. Qutublanish d. Fotoeffekt Feedback The correct answer is: Fotoeffekt Question 9 Correct
Mark 1.00 out of 1.00 Flag question Question text Shaffof moddadan hosil bolgan yupqa parda uning sirtiga perpendikular tushuvchi monoxromatik yorug’lik bilan yoritilganda unda bir xil oraliq bilan galma-gal keluvchi parallel qora va yoruq yo’llar kuzatildi. Pardaning alohida qismlarining qalinligi bir xilmi? Select one: a. yo’q, parda pona shaklda bo’ladi b. yo’q, parda halqa shaklida bo’ladi c. yo’q, parda shar shaklida bo’ladi d. ha Feedback
The correct answer is: yo’q, parda pona shaklda bo’ladi Question Download 0.97 Mb. Do'stlaringiz bilan baham: 
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